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 /* Structure to hold one channel private key. */
65 struct SilcChannelPrivateKeyStruct {
66 SilcCipher cipher; /* The cipher and key */
67 SilcHmac hmac; /* The HMAC and hmac key */
68 unsigned char *key; /* The key data */
69 SilcUInt32 key_len; /* The key length */
72 /* Channel entry context. This is allocate for every channel client has
73 joined to. This includes for example the channel specific keys */
74 struct SilcChannelEntryStruct {
79 /* All clients that has joined this channel */
80 SilcHashTable user_list;
83 SilcCipher channel_key; /* The channel key */
84 unsigned char *key; /* Raw key data */
86 unsigned char iv[SILC_CIPHER_MAX_IV_SIZE]; /* Current IV */
87 SilcHmac hmac; /* Current HMAC */
88 SilcDList private_keys; /* List of private keys or NULL */
89 SilcChannelPrivateKey curr_key; /* Current private key */
91 /* Old channel key is saved for a short period of time when rekey occurs
92 in case if someone is sending messages after the rekey encrypted with
93 the old key, we can still decrypt them. */
94 SilcCipher old_channel_key;
99 /* Server entry context. This represents one server. When server information
100 is resolved with INFO command the server info is saved in this context.
101 Also the connected servers are saved here. */
102 struct SilcServerEntryStruct {
105 SilcServerID *server_id;
108 /* Prototypes. These are used only by the library. Application should not
109 call these directly. */
112 silc_client_add_client(SilcClient client, SilcClientConnection conn,
113 char *nickname, char *username,
114 char *userinfo, SilcClientID *id, SilcUInt32 mode);
115 void silc_client_update_client(SilcClient client,
116 SilcClientConnection conn,
117 SilcClientEntry client_entry,
118 const char *nickname,
119 const char *username,
120 const char *userinfo,
122 void silc_client_del_client_entry(SilcClient client,
123 SilcClientConnection conn,
124 SilcClientEntry client_entry);
125 SilcClientEntry silc_idlist_get_client(SilcClient client,
126 SilcClientConnection conn,
127 const char *nickname,
130 SilcChannelEntry silc_client_add_channel(SilcClient client,
131 SilcClientConnection conn,
132 const char *channel_name,
134 SilcChannelID *channel_id);
135 bool silc_client_replace_channel_id(SilcClient client,
136 SilcClientConnection conn,
137 SilcChannelEntry channel,
138 SilcChannelID *new_id);
139 void silc_client_nickname_format(SilcClient client,
140 SilcClientConnection conn,
141 SilcClientEntry client_entry);