5 Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
7 Copyright (C) 2000 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 Operations
27 * These functions must be implemented by the application calling the
28 * SILC client library. The client library can call these functions at
31 * To use this structure: define a static SilcClientOperations variable,
32 * fill it and pass its pointer to silc_client_alloc function.
35 void (*say)(SilcClient client, SilcClientConnection conn, char *msg, ...);
36 void (*channel_message)(SilcClient client, SilcClientConnection conn,
37 SilcClientEntry sender, SilcChannelEntry channel,
39 void (*private_message)(SilcClient client, SilcClientConnection conn,
40 SilcClientEntry sender, char *msg);
41 void (*notify)(SilcClient client, SilcClientConnection conn,
42 SilcNotifyType type, ...);
43 void (*command)(SilcClient client, SilcClientConnection conn,
44 SilcClientCommandContext cmd_context, int success,
46 void (*command_reply)(SilcClient client, SilcClientConnection conn,
47 SilcCommandPayload cmd_payload, int success,
48 SilcCommand command, SilcCommandStatus status, ...);
49 void (*connect)(SilcClient client, SilcClientConnection conn, int success);
50 void (*disconnect)(SilcClient client, SilcClientConnection conn);
51 int (*get_auth_method)(SilcClient client, SilcClientConnection conn,
52 char *hostname, unsigned short port,
53 SilcProtocolAuthMeth *auth_meth,
54 unsigned char **auth_data,
55 unsigned int *auth_data_len);
56 int (*verify_server_key)(SilcClient client, SilcClientConnection conn,
57 unsigned char *pk, unsigned int pk_len,
58 SilcSKEPKType pk_type);
59 unsigned char *(*ask_passphrase)(SilcClient client,
60 SilcClientConnection conn);
61 void (*failure)(SilcClient client, SilcClientConnection conn,
62 SilcProtocol protocol, void *failure);
63 } SilcClientOperations;
66 Descriptions of above operation functions:
68 void (*say)(SilcClient client, SilcClientConnection conn, char *msg, ...);
70 Message sent to the application by library. `conn' associates the
71 message to a specific connection. `conn', however, may be NULL.
74 void (*channel_message)(SilcClient client, SilcClientConnection conn,
75 SilcClientEntry client, SilcChannelEntry channel,
78 Message for a channel. The `sender' is the sender of the message
79 The `channel' is the channel.
82 void (*private_message)(SilcClient client, SilcClientConnection conn,
83 char *sender, char *msg);
85 Private message to the client. The `sender' is the sender of the
89 void (*notify)(SilcClient client, SilcClientConnection conn, ...);
91 Notify message to the client. The notify arguments are sent in the
92 same order as servers sends them. The arguments are same as received
93 from the server except for ID's. If ID is received application receives
94 the corresponding entry to the ID. For example, if Client ID is received
95 application receives SilcClientEntry. Also, if the notify type is
96 for channel the channel entry is sent to application (even if server
97 does not send it because client library gets the channel entry from
98 the Channel ID in the packet's header).
101 void (*command)(SilcClient client, SilcClientConnection conn,
102 SilcClientCommandContext cmd_context, int success,
103 SilcCommand command);
105 Command handler. This function is called always in the command function.
106 If error occurs it will be called as well. `conn' is the associated
107 client connection. `cmd_context' is the command context that was
108 originally sent to the command. `success' is FALSE if error occured
109 during command. `command' is the command being processed. It must be
110 noted that this is not reply from server. This is merely called just
111 after application has called the command. Just to tell application
112 that the command really was processed.
115 void (*command_reply)(SilcClient client, SilcClientConnection conn,
116 SilcCommandPayload cmd_payload, int success,
117 SilcCommandStatus status, SilcCommand command, ...);
119 Command reply handler. This function is called always in the command reply
120 function. If error occurs it will be called as well. Normal scenario
121 is that it will be called after the received command data has been parsed
122 and processed. The function is used to pass the received command data to
125 `conn' is the associated client connection. `cmd_payload' is the command
126 payload data received from server and it can be ignored. It is provided
127 if the application would like to re-parse the received command data,
128 however, it must be noted that the data is parsed already by the library
129 thus the payload can be ignored. `success' is FALSE if error occured.
130 In this case arguments are not sent to the application. The `status' is
131 the command reply status server returned. The `command' is the command
132 reply being processed. The function has variable argument list and each
133 command defines the number and type of arguments it passes to the
134 application (on error they are not sent).
137 void (*connect)(SilcClient client, SilcClientConnection conn, int success);
139 Called to indicate that connection was either successfully established
140 or connecting failed. This is also the first time application receives
141 the SilcClientConnection objecet which it should save somewhere.
144 void (*disconnect)(SilcClient client, SilcClientConnection conn);
146 Called to indicate that connection was disconnected to the server.
149 int (*get_auth_method)(SilcClient client, SilcClientConnection conn,
150 char *hostname, unsigned short port,
151 SilcProtocolAuthMeth *auth_meth,
152 unsigned char **auth_data,
153 unsigned int *auth_data_len);
155 Find authentication method and authentication data by hostname and
156 port. The hostname may be IP address as well. The found authentication
157 method and authentication data is returned to `auth_meth', `auth_data'
158 and `auth_data_len'. The function returns TRUE if authentication method
159 is found and FALSE if not. `conn' may be NULL.
162 int (*verify_server_key)(SilcClient client, SilcClientConnection conn,
163 unsigned char *pk, unsigned int pk_len,
164 SilcSKEPKType pk_type);
166 Verifies received public key. The public key has been received from
167 a server. If user decides to trust the key may be saved as trusted
168 server key for later use. If user does not trust the key this returns
169 FALSE. If everything is Ok this returns TRUE.
172 unsigned char *(*ask_passphrase)(SilcClient client,
173 SilcClientConnection conn);
175 Ask (interact, that is) a passphrase from user. Returns the passphrase
179 void (*failure)(SilcClient client, SilcClientConnection conn,
180 SilcProtocol protocol, void *failure);
182 Notifies application that failure packet was received. This is called
183 if there is some protocol active in the client. The `protocol' is the
184 protocol context. The `failure' is opaque pointer to the failure
185 indication. Note, that the `failure' is protocol dependant and application
186 must explicitly cast it to correct type. Usually `failure' is 32 bit
187 failure type (see protocol specs for all protocol failure types).