Line data Source code
1 : /*
2 : * Copyright (C) 2004-2026 Savoir-faire Linux Inc.
3 : *
4 : * This program is free software: you can redistribute it and/or modify
5 : * it under the terms of the GNU General Public License as published by
6 : * the Free Software Foundation, either version 3 of the License, or
7 : * (at your option) any later version.
8 : *
9 : * This program is distributed in the hope that it will be useful,
10 : * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 : * GNU General Public License for more details.
13 : *
14 : * You should have received a copy of the GNU General Public License
15 : * along with this program. If not, see <https://www.gnu.org/licenses/>.
16 : */
17 : #pragma once
18 :
19 : #include "string_utils.h"
20 :
21 : #include <opendht/infohash.h>
22 : #include <opendht/value.h>
23 : #include <opendht/default_types.h>
24 :
25 : #include <msgpack.hpp>
26 : #include <json/json.h>
27 :
28 : #include <map>
29 : #include <string>
30 : #include <ctime>
31 :
32 : namespace jami {
33 :
34 : struct Contact
35 : {
36 : /** Time of contact addition */
37 : time_t added {0};
38 :
39 : /** Time of contact removal */
40 : time_t removed {0};
41 :
42 : /** True if we got confirmation that this contact also added us */
43 : bool confirmed {false};
44 :
45 : /** True if the contact is banned (if not active) */
46 : bool banned {false};
47 :
48 : /** Non empty if a swarm is linked */
49 : std::string conversationId {};
50 :
51 : /** True if the contact is an active contact (not banned nor removed) */
52 719 : bool isActive() const { return added > removed; }
53 246 : bool isBanned() const { return not isActive() and banned; }
54 :
55 179 : Contact() = default;
56 3 : Contact(const Json::Value& json)
57 3 : {
58 3 : added = json["added"].asLargestUInt();
59 3 : removed = json["removed"].asLargestUInt();
60 3 : confirmed = json["confirmed"].asBool();
61 3 : banned = json["banned"].asBool();
62 3 : conversationId = json["conversationId"].asString();
63 3 : }
64 :
65 : /**
66 : * Update this contact using other known contact information,
67 : * return true if contact state was changed.
68 : */
69 60 : bool update(const Contact& c)
70 : {
71 60 : const auto copy = *this;
72 60 : auto isMoreRecent = std::max(c.added, c.removed) > std::max(added, removed);
73 60 : if (isMoreRecent) {
74 5 : added = c.added;
75 5 : removed = c.removed;
76 5 : banned = c.banned;
77 5 : conversationId = c.conversationId;
78 5 : confirmed = c.confirmed;
79 55 : } else if (isActive() && added == c.added) {
80 42 : confirmed = confirmed or c.confirmed;
81 : }
82 120 : return hasDifferentState(copy);
83 60 : }
84 :
85 60 : bool hasDifferentState(const Contact& other) const
86 : {
87 60 : return other.isActive() != isActive() or other.isBanned() != isBanned() or other.confirmed != confirmed;
88 : }
89 :
90 5 : Json::Value toJson() const
91 : {
92 5 : Json::Value json;
93 5 : json["added"] = Json::Int64(added);
94 5 : if (removed) {
95 0 : json["removed"] = Json::Int64(removed);
96 : }
97 5 : if (confirmed)
98 3 : json["confirmed"] = confirmed;
99 5 : if (banned)
100 0 : json["banned"] = banned;
101 5 : json["conversationId"] = conversationId;
102 5 : return json;
103 0 : }
104 :
105 7 : std::map<std::string, std::string> toMap() const
106 : {
107 0 : std::map<std::string, std::string> result {{"added", std::to_string(added)},
108 7 : {"removed", std::to_string(removed)},
109 35 : {"conversationId", conversationId}};
110 :
111 7 : if (isActive())
112 6 : result.emplace("confirmed", confirmed ? TRUE_STR : FALSE_STR);
113 7 : if (isBanned())
114 0 : result.emplace("banned", TRUE_STR);
115 :
116 7 : return result;
117 7 : }
118 :
119 404 : MSGPACK_DEFINE_MAP(added, removed, confirmed, banned, conversationId)
120 : };
121 :
122 : struct TrustRequest
123 : {
124 : std::shared_ptr<dht::crypto::PublicKey> device;
125 : std::string conversationId;
126 : time_t received;
127 : std::vector<uint8_t> payload;
128 117 : MSGPACK_DEFINE_MAP(device, conversationId, received, payload)
129 : };
130 :
131 : struct DeviceAnnouncement : public dht::SignedValue<DeviceAnnouncement>
132 : {
133 : private:
134 : using BaseClass = dht::SignedValue<DeviceAnnouncement>;
135 :
136 : public:
137 : static const constexpr dht::ValueType& TYPE = dht::ValueType::USER_DATA;
138 : dht::InfoHash dev;
139 : std::shared_ptr<dht::crypto::PublicKey> pk;
140 5857 : MSGPACK_DEFINE_MAP(dev, pk)
141 : };
142 :
143 : struct KnownDeviceSync
144 : {
145 : std::string name;
146 860 : MSGPACK_DEFINE_MAP(name)
147 : };
148 :
149 : struct DeviceSync : public dht::EncryptedValue<DeviceSync>
150 : {
151 : static const constexpr dht::ValueType& TYPE = dht::ValueType::USER_DATA;
152 : uint64_t date;
153 : std::string device_name;
154 : std::map<dht::PkId, KnownDeviceSync> devices;
155 : std::map<dht::InfoHash, Contact> peers;
156 : std::map<dht::InfoHash, TrustRequest> trust_requests;
157 782 : MSGPACK_DEFINE_MAP(date, device_name, devices, peers, trust_requests)
158 : };
159 :
160 : struct KnownDevice
161 : {
162 : using clock = std::chrono::system_clock;
163 : using time_point = clock::time_point;
164 :
165 : /** Device certificate */
166 : std::shared_ptr<dht::crypto::Certificate> certificate;
167 :
168 : /** Device name */
169 : std::string name {};
170 :
171 : /** Time of last received device sync */
172 : time_point last_sync {time_point::min()};
173 :
174 3971 : KnownDevice(const std::shared_ptr<dht::crypto::Certificate>& cert,
175 : const std::string& n = {},
176 : time_point sync = time_point::min())
177 3971 : : certificate(cert)
178 3971 : , name(n)
179 3971 : , last_sync(sync)
180 3971 : {}
181 : };
182 :
183 : } // namespace jami
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