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-rw-r--r--src/abd/delegate_misc.c278
1 files changed, 0 insertions, 278 deletions
diff --git a/src/abd/delegate_misc.c b/src/abd/delegate_misc.c
deleted file mode 100644
index 0c5520d52..000000000
--- a/src/abd/delegate_misc.c
+++ /dev/null
@@ -1,278 +0,0 @@
1/*
2 This file is part of GNUnet.
3 Copyright (C) 2009-2013, 2016 GNUnet e.V.
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/**
23 * @file abd/delegate_misc.c
24 * @brief Misc API for delegate
25 *
26 * @author Martin Schanzenbach
27 */
28#include "platform.h"
29#include "gnunet_util_lib.h"
30#include "gnunet_constants.h"
31#include "gnunet_abd_service.h"
32#include "gnunet_signatures.h"
33#include "abd.h"
34#include <inttypes.h>
35
36char *
37GNUNET_ABD_delegate_to_string (
38 const struct GNUNET_ABD_Delegate *cred)
39{
40 char *cred_str;
41 char *subject_pkey;
42 char *issuer_pkey;
43 char *signature;
44
45 subject_pkey = GNUNET_IDENTITY_public_key_to_string (&cred->subject_key);
46 issuer_pkey = GNUNET_IDENTITY_public_key_to_string (&cred->issuer_key);
47 GNUNET_STRINGS_base64_encode ((char *) &cred->signature,
48 sizeof (struct GNUNET_IDENTITY_Signature),
49 &signature);
50 if (0 == cred->subject_attribute_len)
51 {
52 GNUNET_asprintf (&cred_str,
53 "%s.%s -> %s | %s | %" SCNu64,
54 issuer_pkey,
55 cred->issuer_attribute,
56 subject_pkey,
57 signature,
58 cred->expiration.abs_value_us);
59 }
60 else
61 {
62 GNUNET_asprintf (&cred_str,
63 "%s.%s -> %s.%s | %s | %" SCNu64,
64 issuer_pkey,
65 cred->issuer_attribute,
66 subject_pkey,
67 cred->subject_attribute,
68 signature,
69 cred->expiration.abs_value_us);
70 }
71 GNUNET_free (subject_pkey);
72 GNUNET_free (issuer_pkey);
73 GNUNET_free (signature);
74
75 return cred_str;
76}
77
78
79struct GNUNET_ABD_Delegate *
80GNUNET_ABD_delegate_from_string (const char *s)
81{
82 struct GNUNET_ABD_Delegate *dele;
83 size_t enclen = (sizeof (struct GNUNET_IDENTITY_PublicKey)) * 8;
84 if (enclen % 5 > 0)
85 enclen += 5 - enclen % 5;
86 enclen /= 5; /* 260/5 = 52 */
87 char subject_pkey[enclen + 1];
88 char issuer_pkey[enclen + 1];
89 char iss_attr[253 + 1];
90 // Needs to be initialized, in case of Type 1 credential (A.a <- B)
91 char sub_attr[253 + 1] = "";
92 char signature[256]; // TODO max payload size
93
94 struct GNUNET_IDENTITY_Signature *sig;
95 struct GNUNET_TIME_Absolute etime_abs;
96
97 // If it's A.a <- B.b...
98 if (6 != sscanf (s,
99 "%58s.%253s -> %58s.%253s | %s | %" SCNu64,
100 issuer_pkey,
101 iss_attr,
102 subject_pkey,
103 sub_attr,
104 signature,
105 &etime_abs.abs_value_us))
106 {
107 // Try if it's A.a <- B
108 if (5 != sscanf (s,
109 "%58s.%253s -> %58s | %s | %" SCNu64,
110 issuer_pkey,
111 iss_attr,
112 subject_pkey,
113 signature,
114 &etime_abs.abs_value_us))
115 {
116 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
117 "Unable to parse DEL record string `%s'\n",
118 s);
119 return NULL;
120 }
121 }
122
123 // +1 for \0
124 int attr_len;
125 if (strcmp (sub_attr, "") == 0)
126 {
127 attr_len = strlen (iss_attr) + 1;
128 }
129 else
130 {
131 attr_len = strlen (iss_attr) + strlen (sub_attr) + 2;
132 }
133 dele = GNUNET_malloc (sizeof (struct GNUNET_ABD_Delegate) + attr_len);
134
135 char tmp_str[attr_len];
136 GNUNET_memcpy (tmp_str, iss_attr, strlen (iss_attr));
137 if (strcmp (sub_attr, "") != 0)
138 {
139 tmp_str[strlen (iss_attr)] = '\0';
140 GNUNET_memcpy (tmp_str + strlen (iss_attr) + 1,
141 sub_attr,
142 strlen (sub_attr));
143 }
144 tmp_str[attr_len - 1] = '\0';
145
146 if (GNUNET_SYSERR ==
147 GNUNET_IDENTITY_public_key_from_string (subject_pkey,
148 &dele->subject_key))
149 {
150 GNUNET_free (dele);
151 return NULL;
152 }
153 if (GNUNET_SYSERR ==
154 GNUNET_IDENTITY_public_key_from_string (issuer_pkey,
155 &dele->issuer_key))
156 {
157 GNUNET_free (dele);
158 return NULL;
159 }
160 GNUNET_assert (sizeof (struct GNUNET_IDENTITY_Signature) ==
161 GNUNET_STRINGS_base64_decode (signature,
162 strlen (signature),
163 (void **) &sig));
164 dele->signature = *sig;
165 dele->expiration = etime_abs;
166 GNUNET_free (sig);
167
168 GNUNET_memcpy (&dele[1], tmp_str, attr_len);
169
170 dele->issuer_attribute = (char *) &dele[1];
171 dele->issuer_attribute_len = strlen (iss_attr);
172 if (strcmp (sub_attr, "") == 0)
173 {
174 dele->subject_attribute = NULL;
175 dele->subject_attribute_len = 0;
176 }
177 else
178 {
179 dele->subject_attribute = (char *) &dele[1] + strlen (iss_attr) + 1;
180 dele->subject_attribute_len = strlen (sub_attr);
181 }
182
183 return dele;
184}
185
186
187/**
188 * Issue an attribute to a subject
189 *
190 * @param issuer the ego that should be used to issue the attribute
191 * @param subject the subject of the attribute
192 * @param iss_attr the name of the attribute
193 * @return handle to the queued request
194 */
195
196struct GNUNET_ABD_Delegate *
197GNUNET_ABD_delegate_issue (
198 const struct GNUNET_IDENTITY_PrivateKey *issuer,
199 struct GNUNET_IDENTITY_PublicKey *subject,
200 const char *iss_attr,
201 const char *sub_attr,
202 struct GNUNET_TIME_Absolute *expiration)
203{
204 struct DelegateEntry *del;
205 struct GNUNET_ABD_Delegate *dele;
206 size_t size;
207 int attr_len;
208
209 if (NULL == sub_attr)
210 {
211 // +1 for \0
212 attr_len = strlen (iss_attr) + 1;
213 }
214 else
215 {
216 // +2 for both strings need to be terminated with \0
217 attr_len = strlen (iss_attr) + strlen (sub_attr) + 2;
218 }
219 size = sizeof (struct DelegateEntry) + attr_len;
220
221 char tmp_str[attr_len];
222 GNUNET_memcpy (tmp_str, iss_attr, strlen (iss_attr));
223 if (NULL != sub_attr)
224 {
225 tmp_str[strlen (iss_attr)] = '\0';
226 GNUNET_memcpy (tmp_str + strlen (iss_attr) + 1,
227 sub_attr,
228 strlen (sub_attr));
229 }
230 tmp_str[attr_len - 1] = '\0';
231
232 del = GNUNET_malloc (size);
233 del->purpose.size =
234 htonl (size - sizeof (struct GNUNET_IDENTITY_Signature));
235 del->purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_DELEGATE);
236 GNUNET_IDENTITY_key_get_public (issuer, &del->issuer_key);
237 del->subject_key = *subject;
238 del->expiration = GNUNET_htonll (expiration->abs_value_us);
239 del->issuer_attribute_len = htonl (strlen (iss_attr) + 1);
240 if (NULL == sub_attr)
241 {
242 del->subject_attribute_len = htonl (0);
243 }
244 else
245 {
246 del->subject_attribute_len = htonl (strlen (sub_attr) + 1);
247 }
248
249 GNUNET_memcpy (&del[1], tmp_str, attr_len);
250
251 GNUNET_IDENTITY_sign_ (issuer, &del->purpose, &del->signature);
252
253 dele = GNUNET_malloc (sizeof (struct GNUNET_ABD_Delegate) + attr_len);
254 dele->signature = del->signature;
255 dele->expiration = *expiration;
256 GNUNET_IDENTITY_key_get_public (issuer, &dele->issuer_key);
257
258 dele->subject_key = *subject;
259
260 // Copy the combined string at the part in the memory where the struct ends
261 GNUNET_memcpy (&dele[1], tmp_str, attr_len);
262
263 dele->issuer_attribute = (char *) &dele[1];
264 dele->issuer_attribute_len = strlen (iss_attr);
265 if (NULL == sub_attr)
266 {
267 dele->subject_attribute = NULL;
268 dele->subject_attribute_len = 0;
269 }
270 else
271 {
272 dele->subject_attribute = (char *) &dele[1] + strlen (iss_attr) + 1;
273 dele->subject_attribute_len = strlen (sub_attr);
274 }
275
276 GNUNET_free (del);
277 return dele;
278}
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-18 17:55:00 +0000