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author | Christian Grothoff <christian@grothoff.org> | 2009-08-31 21:14:22 +0000 |
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committer | Christian Grothoff <christian@grothoff.org> | 2009-08-31 21:14:22 +0000 |
commit | 5dc5c7268ba88e70e208dc5c0a43b19bf111aeb3 (patch) | |
tree | f91bd544f2e14d69b9eee907e172588651215a76 /src/fs/fs_list_indexed.c | |
parent | 32716cc62ae96040bde78dacabe18a556290f392 (diff) | |
download | gnunet-5dc5c7268ba88e70e208dc5c0a43b19bf111aeb3.tar.gz gnunet-5dc5c7268ba88e70e208dc5c0a43b19bf111aeb3.zip |
working on unindex
Diffstat (limited to 'src/fs/fs_list_indexed.c')
-rw-r--r-- | src/fs/fs_list_indexed.c | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/src/fs/fs_list_indexed.c b/src/fs/fs_list_indexed.c new file mode 100644 index 000000000..1a404a078 --- /dev/null +++ b/src/fs/fs_list_indexed.c | |||
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1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | (C) 2003, 2004, 2006, 2009 Christian Grothoff (and other contributing authors) | ||
4 | |||
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. | ||
9 | |||
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. | ||
14 | |||
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. | ||
19 | */ | ||
20 | |||
21 | /** | ||
22 | * @file fs/fs_list_indexed.c | ||
23 | * @author Christian Grothoff | ||
24 | * @brief provide a list of all indexed files | ||
25 | */ | ||
26 | |||
27 | #include "platform.h" | ||
28 | #include "gnunet_constants.h" | ||
29 | #include "gnunet_fs_service.h" | ||
30 | #include "gnunet_protocols.h" | ||
31 | #include "fs.h" | ||
32 | |||
33 | |||
34 | /** | ||
35 | * Context for "GNUNET_FS_get_indexed_files". | ||
36 | */ | ||
37 | struct GetIndexedContext | ||
38 | { | ||
39 | /** | ||
40 | * Handle to global FS context. | ||
41 | */ | ||
42 | struct GNUNET_FS_Handle *h; | ||
43 | |||
44 | /** | ||
45 | * Connection to the FS service. | ||
46 | */ | ||
47 | struct GNUNET_CLIENT_Connection *client; | ||
48 | |||
49 | /** | ||
50 | * Function to call for each indexed file. | ||
51 | */ | ||
52 | GNUNET_FS_IndexedFileProcessor iterator; | ||
53 | |||
54 | /** | ||
55 | * Closure for iterator. | ||
56 | */ | ||
57 | void *iterator_cls; | ||
58 | |||
59 | /** | ||
60 | * Continuation to trigger at the end. | ||
61 | */ | ||
62 | GNUNET_SCHEDULER_Task cont; | ||
63 | |||
64 | /** | ||
65 | * Closure for cont. | ||
66 | */ | ||
67 | void *cont_cls; | ||
68 | }; | ||
69 | |||
70 | |||
71 | /** | ||
72 | * Function called on each response from the FS | ||
73 | * service with information about indexed files. | ||
74 | * | ||
75 | * @param cls closure (of type "struct GetIndexedContext*") | ||
76 | * @param msg message with indexing information | ||
77 | */ | ||
78 | static void | ||
79 | handle_index_info (void *cls, | ||
80 | const struct GNUNET_MessageHeader *msg) | ||
81 | { | ||
82 | struct GetIndexedContext *gic = cls; | ||
83 | const struct IndexInfoMessage *iim; | ||
84 | uint16_t msize; | ||
85 | const char *filename; | ||
86 | |||
87 | if (NULL == msg) | ||
88 | { | ||
89 | GNUNET_log (GNUNET_ERROR_TYPE_WARNING, | ||
90 | _("Failed to receive response for `%s' request from `%s' service.\n"), | ||
91 | "GET_INDEXED", | ||
92 | "fs"); | ||
93 | GNUNET_SCHEDULER_add_continuation (gic->h->sched, | ||
94 | GNUNET_NO, | ||
95 | gic->cont, | ||
96 | gic->cont_cls, | ||
97 | GNUNET_SCHEDULER_REASON_TIMEOUT); | ||
98 | GNUNET_CLIENT_disconnect (gic->client); | ||
99 | GNUNET_free (gic); | ||
100 | return; | ||
101 | } | ||
102 | if (ntohs (msg->type) == GNUNET_MESSAGE_TYPE_FS_INDEX_LIST_END) | ||
103 | { | ||
104 | /* normal end-of-list */ | ||
105 | GNUNET_SCHEDULER_add_continuation (gic->h->sched, | ||
106 | GNUNET_NO, | ||
107 | gic->cont, | ||
108 | gic->cont_cls, | ||
109 | GNUNET_SCHEDULER_REASON_PREREQ_DONE); | ||
110 | GNUNET_CLIENT_disconnect (gic->client); | ||
111 | GNUNET_free (gic); | ||
112 | return; | ||
113 | } | ||
114 | msize = ntohs (msg->size); | ||
115 | iim = (const struct IndexInfoMessage*) msg; | ||
116 | filename = (const char*) &iim[1]; | ||
117 | if ( (ntohs (msg->type) != GNUNET_MESSAGE_TYPE_FS_INDEX_LIST_ENTRY) || | ||
118 | (msize <= sizeof (struct IndexInfoMessage)) || | ||
119 | (filename[msize-sizeof (struct IndexInfoMessage) -1] != '\0') ) | ||
120 | { | ||
121 | /* bogus reply */ | ||
122 | GNUNET_log (GNUNET_ERROR_TYPE_WARNING, | ||
123 | _("Failed to receive valid response for `%s' request from `%s' service.\n"), | ||
124 | "GET_INDEXED", | ||
125 | "fs"); | ||
126 | GNUNET_SCHEDULER_add_continuation (gic->h->sched, | ||
127 | GNUNET_NO, | ||
128 | gic->cont, | ||
129 | gic->cont_cls, | ||
130 | GNUNET_SCHEDULER_REASON_TIMEOUT); | ||
131 | GNUNET_CLIENT_disconnect (gic->client); | ||
132 | GNUNET_free (gic); | ||
133 | return; | ||
134 | } | ||
135 | if (GNUNET_OK != | ||
136 | gic->iterator (gic->iterator_cls, | ||
137 | filename, | ||
138 | &iim->file_id)) | ||
139 | { | ||
140 | GNUNET_SCHEDULER_add_continuation (gic->h->sched, | ||
141 | GNUNET_NO, | ||
142 | gic->cont, | ||
143 | gic->cont_cls, | ||
144 | GNUNET_SCHEDULER_REASON_PREREQ_DONE); | ||
145 | GNUNET_CLIENT_disconnect (gic->client); | ||
146 | GNUNET_free (gic); | ||
147 | return; | ||
148 | } | ||
149 | /* get more */ | ||
150 | GNUNET_CLIENT_receive (gic->client, | ||
151 | &handle_index_info, | ||
152 | gic, | ||
153 | GNUNET_CONSTANTS_SERVICE_TIMEOUT); | ||
154 | } | ||
155 | |||
156 | |||
157 | /** | ||
158 | * Transmit the request to get a list of all | ||
159 | * indexed files to the "FS" service. | ||
160 | * | ||
161 | * @param cls closure (of type "struct GetIndexedContext*") | ||
162 | * @param size number of bytes availabe in buf | ||
163 | * @param buf where to write the message, NULL on error | ||
164 | * @return number of bytes written to buf | ||
165 | */ | ||
166 | static size_t | ||
167 | transmit_get_indexed (void *cls, | ||
168 | size_t size, | ||
169 | void *buf) | ||
170 | { | ||
171 | struct GetIndexedContext *gic = cls; | ||
172 | struct GNUNET_MessageHeader *hdr; | ||
173 | |||
174 | if (NULL == buf) | ||
175 | { | ||
176 | GNUNET_log (GNUNET_ERROR_TYPE_WARNING, | ||
177 | _("Failed to transmit `%s' request to `%s' service.\n"), | ||
178 | "GET_INDEXED", | ||
179 | "fs"); | ||
180 | GNUNET_SCHEDULER_add_continuation (gic->h->sched, | ||
181 | GNUNET_NO, | ||
182 | gic->cont, | ||
183 | gic->cont_cls, | ||
184 | GNUNET_SCHEDULER_REASON_TIMEOUT); | ||
185 | GNUNET_CLIENT_disconnect (gic->client); | ||
186 | GNUNET_free (gic); | ||
187 | return 0; | ||
188 | } | ||
189 | GNUNET_assert (size >= sizeof (struct GNUNET_MessageHeader)); | ||
190 | hdr = buf; | ||
191 | hdr->size = htons (sizeof (struct GNUNET_MessageHeader)); | ||
192 | hdr->type = htons (GNUNET_MESSAGE_TYPE_FS_INDEX_LIST_GET); | ||
193 | GNUNET_CLIENT_receive (gic->client, | ||
194 | &handle_index_info, | ||
195 | gic, | ||
196 | GNUNET_CONSTANTS_SERVICE_TIMEOUT); | ||
197 | return sizeof (struct GNUNET_MessageHeader); | ||
198 | } | ||
199 | |||
200 | |||
201 | /** | ||
202 | * Iterate over all indexed files. | ||
203 | * | ||
204 | * @param h handle to the file sharing subsystem | ||
205 | * @param iterator function to call on each indexed file | ||
206 | * @param iterator_cls closure for iterator | ||
207 | * @param cont continuation to call when done; | ||
208 | * reason should be "TIMEOUT" (on | ||
209 | * error) or "PREREQ_DONE" (on success) | ||
210 | * @param cont_cls closure for cont | ||
211 | */ | ||
212 | void | ||
213 | GNUNET_FS_get_indexed_files (struct GNUNET_FS_Handle *h, | ||
214 | GNUNET_FS_IndexedFileProcessor iterator, | ||
215 | void *iterator_cls, | ||
216 | GNUNET_SCHEDULER_Task cont, | ||
217 | void *cont_cls) | ||
218 | { | ||
219 | struct GNUNET_CLIENT_Connection *client; | ||
220 | struct GetIndexedContext *gic; | ||
221 | |||
222 | client = GNUNET_CLIENT_connect (h->sched, | ||
223 | "fs", | ||
224 | h->cfg); | ||
225 | if (NULL == client) | ||
226 | { | ||
227 | GNUNET_log (GNUNET_ERROR_TYPE_WARNING, | ||
228 | _("Failed to not connect to `%s' service.\n"), | ||
229 | "fs"); | ||
230 | GNUNET_SCHEDULER_add_continuation (h->sched, | ||
231 | GNUNET_NO, | ||
232 | cont, | ||
233 | cont_cls, | ||
234 | GNUNET_SCHEDULER_REASON_TIMEOUT); | ||
235 | return; | ||
236 | } | ||
237 | |||
238 | gic = GNUNET_malloc (sizeof (struct GetIndexedContext)); | ||
239 | gic->h = h; | ||
240 | gic->client = client; | ||
241 | gic->iterator = iterator; | ||
242 | gic->iterator_cls = iterator_cls; | ||
243 | gic->cont = cont; | ||
244 | gic->cont_cls = cont_cls; | ||
245 | GNUNET_CLIENT_notify_transmit_ready (client, | ||
246 | sizeof (struct GNUNET_MessageHeader), | ||
247 | GNUNET_CONSTANTS_SERVICE_TIMEOUT, | ||
248 | &transmit_get_indexed, | ||
249 | gic); | ||
250 | } | ||
251 | |||
252 | /* end of fs_list_indexed.c */ | ||