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-rw-r--r--src/topology/friends.c246
1 files changed, 0 insertions, 246 deletions
diff --git a/src/topology/friends.c b/src/topology/friends.c
deleted file mode 100644
index 65c7e81d7..000000000
--- a/src/topology/friends.c
+++ /dev/null
@@ -1,246 +0,0 @@
1/*
2 This file is part of GNUnet.
3 Copyright (C) 2013 Christian Grothoff
4
5 GNUnet is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Affero General Public License as published
7 by the Free Software Foundation, either version 3 of the License,
8 or (at your 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 Affero General Public License for more details.
14
15 You should have received a copy of the GNU Affero General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17
18 SPDX-License-Identifier: AGPL3.0-or-later
19 */
20
21/**
22 * @file topology/friends.c
23 * @brief library to read and write the FRIENDS file
24 * @author Christian Grothoff
25 */
26#include "platform.h"
27#include "gnunet_friends_lib.h"
28
29
30/**
31 * Parse the FRIENDS file.
32 *
33 * @param cfg our configuration
34 * @param cb function to call on each friend found
35 * @param cb_cls closure for @a cb
36 * @return #GNUNET_OK on success, #GNUNET_SYSERR on parsing errors
37 */
38int
39GNUNET_FRIENDS_parse (const struct GNUNET_CONFIGURATION_Handle *cfg,
40 GNUNET_FRIENDS_Callback cb,
41 void *cb_cls)
42{
43 char *fn;
44 char *data;
45 size_t pos;
46 size_t start;
47 struct GNUNET_PeerIdentity pid;
48 uint64_t fsize;
49 ssize_t ssize;
50
51 if (GNUNET_OK !=
52 GNUNET_CONFIGURATION_get_value_filename (cfg,
53 "TOPOLOGY",
54 "FRIENDS",
55 &fn))
56 {
57 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
58 "topology",
59 "FRIENDS");
60 return GNUNET_SYSERR;
61 }
62 if ((GNUNET_OK !=
63 GNUNET_DISK_file_test (fn)) &&
64 (GNUNET_OK !=
65 GNUNET_DISK_fn_write (fn,
66 NULL,
67 0,
68 GNUNET_DISK_PERM_USER_READ
69 | GNUNET_DISK_PERM_USER_WRITE
70 | GNUNET_DISK_OPEN_CREATE)))
71 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING,
72 "write",
73 fn);
74 if ((GNUNET_OK !=
75 GNUNET_DISK_file_size (fn,
76 &fsize,
77 GNUNET_NO,
78 GNUNET_YES)) ||
79 (0 == fsize))
80 {
81 GNUNET_free (fn);
82 return GNUNET_OK;
83 }
84 data = GNUNET_malloc_large (fsize);
85 if (NULL == data)
86 {
87 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "malloc");
88 GNUNET_free (fn);
89 return GNUNET_SYSERR;
90 }
91 ssize = GNUNET_DISK_fn_read (fn,
92 data,
93 fsize);
94 if ((ssize < 0) ||
95 (fsize != (uint64_t) ssize))
96 {
97 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR,
98 "read",
99 "fn");
100 GNUNET_free (fn);
101 GNUNET_free (data);
102 return GNUNET_SYSERR;
103 }
104 start = 0;
105 pos = 0;
106 while (pos < fsize)
107 {
108 while ((pos < fsize) &&
109 (! isspace ((unsigned char) data[pos])))
110 pos++;
111 if (GNUNET_OK !=
112 GNUNET_CRYPTO_eddsa_public_key_from_string (&data[start],
113 pos - start,
114 &pid.public_key))
115 {
116 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
117 _ (
118 "Syntax error in FRIENDS file at offset %llu, skipping bytes `%.*s'.\n"),
119 (unsigned long long) pos,
120 (int) (pos - start),
121 &data[start]);
122 pos++;
123 start = pos;
124 continue;
125 }
126 pos++;
127 start = pos;
128 cb (cb_cls, &pid);
129 }
130 GNUNET_free (data);
131 GNUNET_free (fn);
132 return GNUNET_OK;
133}
134
135
136/**
137 * Handle for writing a friends file.
138 */
139struct GNUNET_FRIENDS_Writer
140{
141 /**
142 * Handle to the file.
143 */
144 struct GNUNET_DISK_FileHandle *fh;
145};
146
147
148/**
149 * Start writing a fresh FRIENDS file. Will make a backup of the
150 * old one.
151 *
152 * @param cfg configuration to use.
153 * @return NULL on error
154 */
155struct GNUNET_FRIENDS_Writer *
156GNUNET_FRIENDS_write_start (const struct GNUNET_CONFIGURATION_Handle *cfg)
157{
158 struct GNUNET_FRIENDS_Writer *w;
159 char *fn;
160
161 if (GNUNET_OK !=
162 GNUNET_CONFIGURATION_get_value_filename (cfg, "TOPOLOGY", "FRIENDS", &fn))
163 {
164 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
165 "topology", "FRIENDS");
166 return NULL;
167 }
168 if (GNUNET_OK !=
169 GNUNET_DISK_directory_create_for_file (fn))
170 {
171 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
172 _ ("Directory for file `%s' does not seem to be writable.\n"),
173 fn);
174 GNUNET_free (fn);
175 return NULL;
176 }
177 if (GNUNET_OK == GNUNET_DISK_file_test (fn))
178 GNUNET_DISK_file_backup (fn);
179 w = GNUNET_new (struct GNUNET_FRIENDS_Writer);
180 w->fh = GNUNET_DISK_file_open (fn,
181 GNUNET_DISK_OPEN_CREATE
182 | GNUNET_DISK_OPEN_WRITE
183 | GNUNET_DISK_OPEN_FAILIFEXISTS,
184 GNUNET_DISK_PERM_USER_READ);
185 GNUNET_free (fn);
186 if (NULL == w->fh)
187 {
188 GNUNET_free (w);
189 return NULL;
190 }
191 return w;
192}
193
194
195/**
196 * Finish writing out the friends file.
197 *
198 * @param w write handle
199 * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
200 */
201int
202GNUNET_FRIENDS_write_stop (struct GNUNET_FRIENDS_Writer *w)
203{
204 int ret;
205
206 ret = GNUNET_DISK_file_close (w->fh);
207 GNUNET_free (w);
208 return ret;
209}
210
211
212/**
213 * Add a friend to the friends file.
214 *
215 * @param w write handle
216 * @param friend_id friend to add
217 * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
218 */
219int
220GNUNET_FRIENDS_write (struct GNUNET_FRIENDS_Writer *w,
221 const struct GNUNET_PeerIdentity *friend_id)
222{
223 char *buf;
224 char *ret;
225 size_t slen;
226
227 ret = GNUNET_CRYPTO_eddsa_public_key_to_string (&friend_id->public_key);
228 GNUNET_asprintf (&buf,
229 "%s\n",
230 ret);
231 GNUNET_free (ret);
232 slen = strlen (buf);
233 if (slen !=
234 GNUNET_DISK_file_write (w->fh,
235 buf,
236 slen))
237 {
238 GNUNET_free (buf);
239 return GNUNET_SYSERR;
240 }
241 GNUNET_free (buf);
242 return GNUNET_OK;
243}
244
245
246/* end of friends.c */
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