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 SilcCipher send_key; /* Private message key for sending */
44 SilcCipher receive_key; /* Private message key for receiving */
45 SilcClientKeyAgreement ke; /* Current key agreement context or NULL */
46 SilcDList attrs; /* Requested Attributes (maybe NULL) */
47 SilcEntryStatus status; /* Status mask */
48 SilcHashTable channels; /* All channels client has joined */
49 unsigned char *key; /* Set only if appliation provided the
50 key material. NULL if the library
52 SilcUInt32 key_len; /* Key length */
53 SilcUInt16 resolve_cmd_ident; /* Command identifier when resolving */
54 bool generated; /* TRUE if library generated `key' */
55 bool valid; /* FALSE if this entry is not valid */
58 /* Client and its mode on a channel */
59 struct SilcChannelUserStruct {
60 SilcClientEntry client;
62 SilcChannelEntry channel;
65 /* Channel entry context. This is allocate for every channel client has
66 joined to. This includes for example the channel specific keys */
67 struct SilcChannelEntryStruct {
71 SilcUInt16 resolve_cmd_ident;
73 /* All clients that has joined this channel */
74 SilcHashTable user_list;
77 SilcCipher channel_key; /* The channel key */
78 unsigned char *key; /* Raw key data */
79 SilcUInt32 key_len; /* Raw key data length */
80 unsigned char iv[SILC_CIPHER_MAX_IV_SIZE]; /* Current IV */
81 SilcHmac hmac; /* Current HMAC */
82 SilcDList private_keys; /* List of private keys or NULL */
83 SilcChannelPrivateKey curr_key; /* Current private key */
85 /* Old channel key is saved for a short period of time when rekey occurs
86 in case if someone is sending messages after the rekey encrypted with
87 the old key, we can still decrypt them. */
88 SilcCipher old_channel_key;
93 /* Server entry context. This represents one server. When server information
94 is resolved with INFO command the server info is saved in this context.
95 Also the connected servers are saved here. */
96 struct SilcServerEntryStruct {
99 SilcServerID *server_id;
100 SilcUInt16 resolve_cmd_ident;
103 /* Prototypes. These are used only by the library. Application should not
104 call these directly. */
107 silc_client_add_client(SilcClient client, SilcClientConnection conn,
108 char *nickname, char *username,
109 char *userinfo, SilcClientID *id, SilcUInt32 mode);
110 void silc_client_update_client(SilcClient client,
111 SilcClientConnection conn,
112 SilcClientEntry client_entry,
113 const char *nickname,
114 const char *username,
115 const char *userinfo,
117 void silc_client_del_client_entry(SilcClient client,
118 SilcClientConnection conn,
119 SilcClientEntry client_entry);
120 SilcClientEntry silc_idlist_get_client(SilcClient client,
121 SilcClientConnection conn,
122 const char *nickname,
125 SilcChannelEntry silc_client_add_channel(SilcClient client,
126 SilcClientConnection conn,
127 const char *channel_name,
129 SilcChannelID *channel_id);
130 SilcServerEntry silc_client_add_server(SilcClient client,
131 SilcClientConnection conn,
132 const char *server_name,
133 const char *server_info,
134 SilcServerID *server_id);
135 void silc_client_update_server(SilcClient client,
136 SilcClientConnection conn,
137 SilcServerEntry server_entry,
138 const char *server_name,
139 const char *server_info);
140 bool silc_client_replace_channel_id(SilcClient client,
141 SilcClientConnection conn,
142 SilcChannelEntry channel,
143 SilcChannelID *new_id);
144 void silc_client_nickname_format(SilcClient client,
145 SilcClientConnection conn,
146 SilcClientEntry client_entry);