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) */
40 SilcUInt32 mode; /* User mode in SILC */
41 SilcClientID *id; /* The Client ID */
42 unsigned char *fingerprint; /* Fingerprint of client's public key */
43 SilcUInt32 fingerprint_len; /* Length of the fingerprint */
44 bool valid; /* FALSE if this entry is not valid */
45 SilcCipher send_key; /* Private message key for sending */
46 SilcCipher receive_key; /* Private message key for receiving */
47 unsigned char *key; /* Set only if appliation provided the
48 key material. NULL if the library
51 bool generated; /* TRUE if library generated the key */
52 SilcClientKeyAgreement ke; /* Current key agreement context or NULL */
53 SilcClientStatus status; /* Status mask */
54 SilcHashTable channels; /* All channels client has joined */
57 /* Client and its mode on a channel */
58 struct SilcChannelUserStruct {
59 SilcClientEntry client;
61 SilcChannelEntry channel;
64 /* Channel entry context. This is allocate for every channel client has
65 joined to. This includes for example the channel specific keys */
66 struct SilcChannelEntryStruct {
71 /* All clients that has joined this channel */
72 SilcHashTable user_list;
75 SilcCipher channel_key; /* The channel key */
76 unsigned char *key; /* Raw key data */
78 unsigned char iv[SILC_CIPHER_MAX_IV_SIZE]; /* Current IV */
79 SilcHmac hmac; /* Current HMAC */
80 SilcDList private_keys; /* List of private keys or NULL */
81 SilcChannelPrivateKey curr_key; /* Current private key */
83 /* Old channel key is saved for a short period of time when rekey occurs
84 in case if someone is sending messages after the rekey encrypted with
85 the old key, we can still decrypt them. */
86 SilcCipher old_channel_key;
91 /* Server entry context. This represents one server. When server information
92 is resolved with INFO command the server info is saved in this context.
93 Also the connected servers are saved here. */
94 struct SilcServerEntryStruct {
97 SilcServerID *server_id;
100 /* Prototypes. These are used only by the library. Application should not
101 call these directly. */
104 silc_client_add_client(SilcClient client, SilcClientConnection conn,
105 char *nickname, char *username,
106 char *userinfo, SilcClientID *id, SilcUInt32 mode);
107 void silc_client_update_client(SilcClient client,
108 SilcClientConnection conn,
109 SilcClientEntry client_entry,
110 const char *nickname,
111 const char *username,
112 const char *userinfo,
114 void silc_client_del_client_entry(SilcClient client,
115 SilcClientConnection conn,
116 SilcClientEntry client_entry);
117 SilcClientEntry silc_idlist_get_client(SilcClient client,
118 SilcClientConnection conn,
119 const char *nickname,
122 SilcChannelEntry silc_client_add_channel(SilcClient client,
123 SilcClientConnection conn,
124 const char *channel_name,
126 SilcChannelID *channel_id);
127 bool silc_client_replace_channel_id(SilcClient client,
128 SilcClientConnection conn,
129 SilcChannelEntry channel,
130 SilcChannelID *new_id);
131 void silc_client_nickname_format(SilcClient client,
132 SilcClientConnection conn,
133 SilcClientEntry client_entry);