Line data Source code
1 : /*
2 : This file is part of GNU Taler
3 : Copyright (C) 2024, 2025 Taler Systems SA
4 :
5 : TALER is free software; you can redistribute it and/or modify it under the
6 : terms of the GNU General Public License as published by the Free Software
7 : Foundation; either version 3, or (at your option) any later version.
8 :
9 : TALER is distributed in the hope that it will be useful, but WITHOUT ANY
10 : WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
11 : A PARTICULAR PURPOSE. See the GNU General Public License for more details.
12 :
13 : You should have received a copy of the GNU General Public License along with
14 : TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
15 : */
16 : /**
17 : * @file src/util/token_family_serialize.c
18 : * @brief shared logic for token family serialization
19 : * @author Iván Ávalos
20 : * @author Christian Grothoff
21 : */
22 : #include "platform.h"
23 : #include <gnunet/gnunet_json_lib.h>
24 : #include <gnunet/gnunet_common.h>
25 : #include <taler/taler_json_lib.h>
26 : #include <jansson.h>
27 : #include "taler/taler_util.h"
28 : #include "taler/taler_merchant_util.h"
29 :
30 :
31 : /**
32 : * Get JSON representation of contract token family key.
33 : *
34 : * @param[in] key contract token family key
35 : * @return JSON representation of @a key; NULL on error
36 : */
37 : static json_t *
38 10 : json_from_token_family_key (
39 : const struct TALER_MERCHANT_ContractTokenFamilyKey *key)
40 : {
41 10 : return GNUNET_JSON_PACK (
42 : GNUNET_JSON_pack_timestamp ("signature_validity_start",
43 : key->valid_after),
44 : GNUNET_JSON_pack_timestamp ("signature_validity_end",
45 : key->valid_before),
46 : TALER_JSON_pack_token_pub (NULL,
47 : &key->pub));
48 : }
49 :
50 :
51 : /**
52 : * Get JSON representation of contract token family details.
53 : *
54 : * @param[in] family contract token family
55 : * @return JSON representation of @a family->details; NULL on error
56 : */
57 : static json_t *
58 11 : json_from_token_family_details (
59 : const struct TALER_MERCHANT_ContractTokenFamily *family)
60 : {
61 11 : switch (family->kind)
62 : {
63 0 : case TALER_MERCHANT_CONTRACT_TOKEN_KIND_INVALID:
64 0 : break;
65 9 : case TALER_MERCHANT_CONTRACT_TOKEN_KIND_SUBSCRIPTION:
66 : {
67 : json_t *trusted_domains;
68 :
69 9 : trusted_domains = json_array ();
70 9 : GNUNET_assert (NULL != trusted_domains);
71 9 : for (unsigned int i = 0;
72 12 : i < family->details.subscription.trusted_domains_len;
73 3 : i++)
74 3 : GNUNET_assert (0 ==
75 : json_array_append_new (
76 : trusted_domains,
77 : json_string (
78 : family->details.subscription.trusted_domains[i])));
79 :
80 9 : return GNUNET_JSON_PACK (
81 : GNUNET_JSON_pack_string ("class",
82 : "subscription"),
83 : GNUNET_JSON_pack_array_steal ("trusted_domains",
84 : trusted_domains));
85 : }
86 2 : case TALER_MERCHANT_CONTRACT_TOKEN_KIND_DISCOUNT:
87 : {
88 : json_t *expected_domains;
89 :
90 2 : expected_domains = json_array ();
91 2 : GNUNET_assert (NULL != expected_domains);
92 2 : for (unsigned int i = 0;
93 5 : i < family->details.discount.expected_domains_len;
94 3 : i++)
95 3 : GNUNET_assert (0 ==
96 : json_array_append_new (
97 : expected_domains,
98 : json_string (
99 : family->details.discount.expected_domains[i])));
100 :
101 2 : return GNUNET_JSON_PACK (
102 : GNUNET_JSON_pack_string ("class",
103 : "discount"),
104 : GNUNET_JSON_pack_array_steal ("expected_domains",
105 : expected_domains));
106 : }
107 : }
108 :
109 0 : GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
110 : "unsupported token family kind %d",
111 : family->kind);
112 0 : GNUNET_assert (0);
113 : return NULL;
114 : }
115 :
116 :
117 : json_t *
118 11 : TALER_MERCHANT_json_from_token_family (
119 : const struct TALER_MERCHANT_ContractTokenFamily *family)
120 : {
121 : json_t *keys;
122 :
123 11 : keys = json_array ();
124 11 : GNUNET_assert (NULL != keys);
125 21 : for (unsigned int i = 0; i < family->keys_len; i++)
126 10 : GNUNET_assert (0 == json_array_append_new (
127 : keys,
128 : json_from_token_family_key (
129 : &family->keys[i])));
130 :
131 11 : return GNUNET_JSON_PACK (
132 : GNUNET_JSON_pack_string ("name",
133 : family->name),
134 : GNUNET_JSON_pack_string ("description",
135 : family->description),
136 : GNUNET_JSON_pack_allow_null (
137 : GNUNET_JSON_pack_object_incref ("description_i18n",
138 : family->description_i18n)),
139 : GNUNET_JSON_pack_array_steal ("keys",
140 : keys),
141 : GNUNET_JSON_pack_object_steal ("details",
142 : json_from_token_family_details (family)),
143 : GNUNET_JSON_pack_bool ("critical",
144 : family->critical));
145 : }
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