diff options
Diffstat (limited to 'src/messenger/gnunet-service-messenger_message_recv.c')
-rw-r--r-- | src/messenger/gnunet-service-messenger_message_recv.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/src/messenger/gnunet-service-messenger_message_recv.c b/src/messenger/gnunet-service-messenger_message_recv.c new file mode 100644 index 000000000..aa28a36ea --- /dev/null +++ b/src/messenger/gnunet-service-messenger_message_recv.c | |||
@@ -0,0 +1,204 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2020 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 | * @author Tobias Frisch | ||
22 | * @file src/messenger/gnunet-service-messenger_message_recv.c | ||
23 | * @brief GNUnet MESSENGER service | ||
24 | */ | ||
25 | |||
26 | #include "gnunet-service-messenger_message_recv.h" | ||
27 | #include "gnunet-service-messenger_message_handle.h" | ||
28 | |||
29 | void | ||
30 | recv_message_info (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel, | ||
31 | struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash) | ||
32 | { | ||
33 | int conflict = GNUNET_CONTAINER_multishortmap_contains (room->members, &(message->body.info.unique_id)); | ||
34 | |||
35 | if (GNUNET_NO == conflict) | ||
36 | { | ||
37 | struct GNUNET_MESSENGER_Message *sync_message = create_message_id (&(message->body.info.unique_id)); | ||
38 | struct GNUNET_HashCode sync_hash; | ||
39 | |||
40 | send_room_message_ext (room, room->host, sync_message, &sync_hash, tunnel); | ||
41 | destroy_message (sync_message); | ||
42 | |||
43 | switch_room_member_id (room, get_room_host_id (room), &(message->body.info.unique_id), NULL); | ||
44 | |||
45 | change_room_host_id (room, &(message->body.info.unique_id)); | ||
46 | } | ||
47 | |||
48 | if (!tunnel->contact_id) | ||
49 | tunnel->contact_id = GNUNET_new(struct GNUNET_ShortHashCode); | ||
50 | |||
51 | GNUNET_memcpy(tunnel->contact_id, &(message->header.sender_id), sizeof(struct GNUNET_ShortHashCode)); | ||
52 | |||
53 | struct GNUNET_ShortHashCode original_id; | ||
54 | |||
55 | if (GNUNET_YES == conflict) | ||
56 | { | ||
57 | GNUNET_memcpy(&original_id, get_room_host_id (room), sizeof(struct GNUNET_ShortHashCode)); | ||
58 | |||
59 | change_room_host_id (room, &(message->body.info.unique_id)); | ||
60 | } | ||
61 | |||
62 | { | ||
63 | struct GNUNET_MESSENGER_Message *join_message = create_message_join (room->host->ego); | ||
64 | struct GNUNET_HashCode join_hash; | ||
65 | |||
66 | send_tunnel_message (tunnel, room->host, join_message, &join_hash); | ||
67 | destroy_message (join_message); | ||
68 | } | ||
69 | |||
70 | if ((GNUNET_YES == conflict) && (0 != GNUNET_memcmp(&original_id, get_room_host_id (room)))) | ||
71 | { | ||
72 | struct GNUNET_MESSENGER_Message *sync_message = create_message_id (&original_id); | ||
73 | struct GNUNET_HashCode sync_hash; | ||
74 | |||
75 | send_tunnel_message (tunnel, room->host, sync_message, &sync_hash); | ||
76 | destroy_message (sync_message); | ||
77 | } | ||
78 | } | ||
79 | |||
80 | struct GNUNET_MESSENGER_MemberInfoSpread | ||
81 | { | ||
82 | struct GNUNET_MESSENGER_SrvRoom *room; | ||
83 | struct GNUNET_MESSENGER_SrvTunnel *tunnel; | ||
84 | }; | ||
85 | |||
86 | static int | ||
87 | iterate_send_member_infos (void *cls, const struct GNUNET_ShortHashCode *key, void *value) | ||
88 | { | ||
89 | struct GNUNET_MESSENGER_MemberInfo *info = value; | ||
90 | struct GNUNET_MESSENGER_MemberInfoSpread *spread = cls; | ||
91 | |||
92 | struct GNUNET_MESSENGER_ListMessage *element = info->session_messages.head; | ||
93 | |||
94 | while (element) | ||
95 | { | ||
96 | const struct GNUNET_MESSENGER_Message *message = get_room_message (spread->room, spread->room->host, | ||
97 | &(element->hash), GNUNET_NO); | ||
98 | |||
99 | if (message) | ||
100 | forward_tunnel_message (spread->tunnel, message, &(element->hash)); | ||
101 | |||
102 | element = element->next; | ||
103 | } | ||
104 | |||
105 | return GNUNET_YES; | ||
106 | } | ||
107 | |||
108 | void | ||
109 | recv_message_join (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel, | ||
110 | struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash) | ||
111 | { | ||
112 | const struct GNUNET_MESSENGER_Message *info_msg = get_room_message (room, room->host, &(message->header.previous), | ||
113 | GNUNET_NO); | ||
114 | |||
115 | if ((info_msg) && (0 == GNUNET_memcmp(&(info_msg->header.sender_id), get_room_host_id (room))) | ||
116 | && (GNUNET_MESSENGER_KIND_INFO == info_msg->header.kind)) | ||
117 | { | ||
118 | struct GNUNET_MESSENGER_MemberInfoSpread spread; | ||
119 | |||
120 | spread.room = room; | ||
121 | |||
122 | if ((tunnel) && (tunnel->contact_id) && (0 == GNUNET_memcmp(tunnel->contact_id, &(message->header.sender_id)))) | ||
123 | spread.tunnel = tunnel; | ||
124 | else | ||
125 | spread.tunnel = find_room_tunnel_to (room, &(message->header.sender_id)); | ||
126 | |||
127 | if (spread.tunnel) | ||
128 | GNUNET_CONTAINER_multishortmap_iterate (room->member_infos, iterate_send_member_infos, &spread); | ||
129 | } | ||
130 | |||
131 | handle_message_join (room, tunnel, message, hash); | ||
132 | } | ||
133 | |||
134 | void | ||
135 | recv_message_leave (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel, | ||
136 | struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash) | ||
137 | { | ||
138 | handle_message_leave (room, tunnel, message, hash); | ||
139 | } | ||
140 | |||
141 | void | ||
142 | recv_message_name (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel, | ||
143 | struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash) | ||
144 | { | ||
145 | handle_message_name (room, tunnel, message, hash); | ||
146 | } | ||
147 | |||
148 | void | ||
149 | recv_message_key (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel, | ||
150 | struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash) | ||
151 | { | ||
152 | handle_message_key (room, tunnel, message, hash); | ||
153 | } | ||
154 | |||
155 | void | ||
156 | recv_message_peer (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel, | ||
157 | struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash) | ||
158 | { | ||
159 | struct GNUNET_PeerIdentity peer; | ||
160 | GNUNET_PEER_resolve (tunnel->peer, &peer); | ||
161 | |||
162 | if (0 == GNUNET_memcmp(&peer, &(message->body.peer.peer))) | ||
163 | { | ||
164 | if (!tunnel->peer_message) | ||
165 | tunnel->peer_message = GNUNET_new(struct GNUNET_HashCode); | ||
166 | |||
167 | GNUNET_memcpy(tunnel->peer_message, hash, sizeof(struct GNUNET_HashCode)); | ||
168 | |||
169 | if (!tunnel->contact_id) | ||
170 | tunnel->contact_id = GNUNET_new(struct GNUNET_ShortHashCode); | ||
171 | |||
172 | GNUNET_memcpy(tunnel->contact_id, &(message->header.sender_id), sizeof(struct GNUNET_ShortHashCode)); | ||
173 | } | ||
174 | |||
175 | handle_message_peer (room, tunnel, message, hash); | ||
176 | } | ||
177 | |||
178 | void | ||
179 | recv_message_id (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel, | ||
180 | struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash) | ||
181 | { | ||
182 | if ((tunnel->contact_id) && (0 == GNUNET_memcmp(tunnel->contact_id, &(message->header.sender_id)))) | ||
183 | GNUNET_memcpy(tunnel->contact_id, &(message->body.id.id), sizeof(struct GNUNET_ShortHashCode)); | ||
184 | |||
185 | handle_message_id (room, tunnel, message, hash); | ||
186 | } | ||
187 | |||
188 | void | ||
189 | recv_message_miss (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel, | ||
190 | struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash) | ||
191 | { | ||
192 | handle_message_miss (room, tunnel, message, hash); | ||
193 | } | ||
194 | |||
195 | void | ||
196 | recv_message_request (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel, | ||
197 | struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash) | ||
198 | { | ||
199 | const struct GNUNET_MESSENGER_Message *msg = get_room_message (room, room->host, &(message->body.request.hash), | ||
200 | GNUNET_NO); | ||
201 | |||
202 | if (msg) | ||
203 | forward_tunnel_message (tunnel, msg, &(message->body.request.hash)); | ||
204 | } | ||