5 Author: Pekka Riikonen <priikone@silcnet.org>
7 Copyright (C) 1997 - 2001 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; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
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
34 char *nickname; /* nickname */
35 char *username; /* username */
36 char *hostname; /* hostname */
37 char *server; /* SILC server name */
38 char *realname; /* Realname (userinfo) */
40 uint32 mode; /* User mode in SILC */
41 SilcClientID *id; /* The Client ID */
42 bool valid; /* FALSE if this entry is not valid */
43 SilcCipher send_key; /* Private message key for sending */
44 SilcCipher receive_key; /* Private message key for receiving */
45 unsigned char *key; /* Set only if appliation provided the
46 key material. NULL if the library
49 bool generated; /* TRUE if library generated the key */
50 SilcClientKeyAgreement ke; /* Current key agreement context or NULL */
51 SilcClientStatus status; /* Status mask */
54 /* Client and its mode on a channel */
55 typedef struct SilcChannelUserStruct {
56 SilcClientEntry client;
58 struct SilcChannelUserStruct *next;
61 /* Structure to hold one channel private key. */
63 SilcCipher cipher; /* The cipher and key */
64 SilcHmac hmac; /* The HMAC and hmac key */
65 unsigned char *key; /* The key data */
66 uint32 key_len; /* The key length */
67 } *SilcChannelPrivateKey;
69 /* Channel entry context. This is allocate for every channel client has
70 joined to. This includes for example the channel specific keys */
71 typedef struct SilcChannelEntryStruct {
81 SilcCipher channel_key; /* The channel key */
82 unsigned char *key; /* Raw key data */
84 unsigned char iv[SILC_CIPHER_MAX_IV_SIZE]; /* Current IV */
85 SilcHmac hmac; /* Current HMAC */
86 SilcDList private_keys; /* List of private keys or NULL */
87 SilcChannelPrivateKey curr_key; /* Current private key */
89 /* Old channel key is saved for a short period of time when rekey occurs
90 in case if someone is sending messages after the rekey encrypted with
91 the old key, we can still decrypt them. */
92 SilcCipher old_channel_key;
97 /* Server entry context. This represents one server. When server information
98 is resolved with INFO command the server info is saved in this context.
99 Also the connected servers are saved here. */
103 SilcServerID *server_id;
106 /* Prototypes. These are used only by the library. Application should not
107 call these directly. */
110 silc_client_add_client(SilcClient client, SilcClientConnection conn,
111 char *nickname, char *username,
112 char *userinfo, SilcClientID *id, uint32 mode);
113 void silc_client_update_client(SilcClient client,
114 SilcClientConnection conn,
115 SilcClientEntry client_entry,
116 const char *nickname,
117 const char *username,
118 const char *userinfo,
120 void silc_client_del_client_entry(SilcClient client,
121 SilcClientEntry client_entry);
122 SilcClientEntry silc_idlist_get_client(SilcClient client,
123 SilcClientConnection conn,
124 const char *nickname,
127 SilcChannelEntry silc_idlist_get_channel_by_id(SilcClient client,
128 SilcClientConnection conn,
129 SilcChannelID *channel_id,
131 void silc_client_nickname_format(SilcClient client,
132 SilcClientConnection conn,
133 SilcClientEntry client_entry);