5 Author: Pekka Riikonen <priikone@silcnet.org>
7 Copyright (C) 2001 - 2002 Pekka Riikonen
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; version 2 of the License.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
23 /* Client entry status */
25 SILC_CLIENT_STATUS_NONE = 0x0000,
26 SILC_CLIENT_STATUS_RESOLVING = 0x0001,
29 /* Client entry context. When client receives information about new client
30 (it receives its ID, for example, by IDENTIFY request) we create new
31 client entry. This entry also includes the private message keys if
33 struct SilcClientEntryStruct {
34 char *nickname; /* nickname */
35 char *username; /* username */
36 char *hostname; /* hostname */
37 char *server; /* SILC server name */
38 char *realname; /* Realname (userinfo) */
39 SilcUInt32 mode; /* User mode in SILC */
40 SilcClientID *id; /* The Client ID */
41 unsigned char *fingerprint; /* Fingerprint of client's public key */
42 SilcUInt32 fingerprint_len; /* Length of the fingerprint */
43 bool valid; /* FALSE if this entry is not valid */
44 SilcCipher send_key; /* Private message key for sending */
45 SilcCipher receive_key; /* Private message key for receiving */
46 unsigned char *key; /* Set only if appliation provided the
47 key material. NULL if the library
50 bool generated; /* TRUE if library generated the key */
51 SilcClientKeyAgreement ke; /* Current key agreement context or NULL */
52 SilcClientStatus status; /* Status mask */
53 SilcHashTable channels; /* All channels client has joined */
56 /* Client and its mode on a channel */
57 struct SilcChannelUserStruct {
58 SilcClientEntry client;
60 SilcChannelEntry channel;
63 /* Channel entry context. This is allocate for every channel client has
64 joined to. This includes for example the channel specific keys */
65 struct SilcChannelEntryStruct {
70 /* All clients that has joined this channel */
71 SilcHashTable user_list;
74 SilcCipher channel_key; /* The channel key */
75 unsigned char *key; /* Raw key data */
77 unsigned char iv[SILC_CIPHER_MAX_IV_SIZE]; /* Current IV */
78 SilcHmac hmac; /* Current HMAC */
79 SilcDList private_keys; /* List of private keys or NULL */
80 SilcChannelPrivateKey curr_key; /* Current private key */
82 /* Old channel key is saved for a short period of time when rekey occurs
83 in case if someone is sending messages after the rekey encrypted with
84 the old key, we can still decrypt them. */
85 SilcCipher old_channel_key;
90 /* Server entry context. This represents one server. When server information
91 is resolved with INFO command the server info is saved in this context.
92 Also the connected servers are saved here. */
93 struct SilcServerEntryStruct {
96 SilcServerID *server_id;
99 /* Prototypes. These are used only by the library. Application should not
100 call these directly. */
103 silc_client_add_client(SilcClient client, SilcClientConnection conn,
104 char *nickname, char *username,
105 char *userinfo, SilcClientID *id, SilcUInt32 mode);
106 void silc_client_update_client(SilcClient client,
107 SilcClientConnection conn,
108 SilcClientEntry client_entry,
109 const char *nickname,
110 const char *username,
111 const char *userinfo,
113 void silc_client_del_client_entry(SilcClient client,
114 SilcClientConnection conn,
115 SilcClientEntry client_entry);
116 SilcClientEntry silc_idlist_get_client(SilcClient client,
117 SilcClientConnection conn,
118 const char *nickname,
121 SilcChannelEntry silc_client_add_channel(SilcClient client,
122 SilcClientConnection conn,
123 const char *channel_name,
125 SilcChannelID *channel_id);
126 SilcServerEntry silc_client_add_server(SilcClient client,
127 SilcClientConnection conn,
128 const char *server_name,
129 const char *server_info,
130 SilcServerID *server_id);
131 bool silc_client_replace_channel_id(SilcClient client,
132 SilcClientConnection conn,
133 SilcChannelEntry channel,
134 SilcChannelID *new_id);
135 void silc_client_nickname_format(SilcClient client,
136 SilcClientConnection conn,
137 SilcClientEntry client_entry);