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 typedef struct SilcChannelEntryStruct *SilcChannelEntry;
25 /* Client entry status */
27 SILC_CLIENT_STATUS_NONE = 0x0000,
28 SILC_CLIENT_STATUS_RESOLVING = 0x0001,
31 /* Client entry context. When client receives information about new client
32 (it receives its ID, for example, by IDENTIFY request) we create new
33 client entry. This entry also includes the private message keys if
36 char *nickname; /* nickname */
37 char *username; /* username */
38 char *hostname; /* hostname */
39 char *server; /* SILC server name */
40 char *realname; /* Realname (userinfo) */
42 uint32 mode; /* User mode in SILC */
43 SilcClientID *id; /* The Client ID */
44 unsigned char *fingerprint; /* Fingerprint of client's public key */
45 uint32 fingerprint_len; /* Length of the fingerprint */
46 bool valid; /* FALSE if this entry is not valid */
47 SilcCipher send_key; /* Private message key for sending */
48 SilcCipher receive_key; /* Private message key for receiving */
49 unsigned char *key; /* Set only if appliation provided the
50 key material. NULL if the library
53 bool generated; /* TRUE if library generated the key */
54 SilcClientKeyAgreement ke; /* Current key agreement context or NULL */
55 SilcClientStatus status; /* Status mask */
56 SilcHashTable channels; /* All channels client has joined */
59 /* Client and its mode on a channel */
60 typedef struct SilcChannelUserStruct {
61 SilcClientEntry client;
63 SilcChannelEntry channel;
66 /* Structure to hold one channel private key. */
68 SilcCipher cipher; /* The cipher and key */
69 SilcHmac hmac; /* The HMAC and hmac key */
70 unsigned char *key; /* The key data */
71 uint32 key_len; /* The key length */
72 } *SilcChannelPrivateKey;
74 /* Channel entry context. This is allocate for every channel client has
75 joined to. This includes for example the channel specific keys */
76 struct SilcChannelEntryStruct {
81 /* All clients that has joined this channel */
82 SilcHashTable user_list;
85 SilcCipher channel_key; /* The channel key */
86 unsigned char *key; /* Raw key data */
88 unsigned char iv[SILC_CIPHER_MAX_IV_SIZE]; /* Current IV */
89 SilcHmac hmac; /* Current HMAC */
90 SilcDList private_keys; /* List of private keys or NULL */
91 SilcChannelPrivateKey curr_key; /* Current private key */
93 /* Old channel key is saved for a short period of time when rekey occurs
94 in case if someone is sending messages after the rekey encrypted with
95 the old key, we can still decrypt them. */
96 SilcCipher old_channel_key;
101 /* Server entry context. This represents one server. When server information
102 is resolved with INFO command the server info is saved in this context.
103 Also the connected servers are saved here. */
107 SilcServerID *server_id;
110 /* Prototypes. These are used only by the library. Application should not
111 call these directly. */
114 silc_client_add_client(SilcClient client, SilcClientConnection conn,
115 char *nickname, char *username,
116 char *userinfo, SilcClientID *id, uint32 mode);
117 void silc_client_update_client(SilcClient client,
118 SilcClientConnection conn,
119 SilcClientEntry client_entry,
120 const char *nickname,
121 const char *username,
122 const char *userinfo,
124 void silc_client_del_client_entry(SilcClient client,
125 SilcClientConnection conn,
126 SilcClientEntry client_entry);
127 SilcClientEntry silc_idlist_get_client(SilcClient client,
128 SilcClientConnection conn,
129 const char *nickname,
132 SilcChannelEntry silc_client_add_channel(SilcClient client,
133 SilcClientConnection conn,
134 const char *channel_name,
136 SilcChannelID *channel_id);
137 bool silc_client_replace_channel_id(SilcClient client,
138 SilcClientConnection conn,
139 SilcChannelEntry channel,
140 SilcChannelID *new_id);
141 void silc_client_nickname_format(SilcClient client,
142 SilcClientConnection conn,
143 SilcClientEntry client_entry);