/*
- client.c
+ client.c
Author: Pekka Riikonen <priikone@silcnet.org>
- Copyright (C) 1997 - 2002 Pekka Riikonen
+ Copyright (C) 1997 - 2003 Pekka Riikonen
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
SILC_TASK_CALLBACK(silc_client_connect_to_server_start);
SILC_TASK_CALLBACK(silc_client_connect_to_server_second);
SILC_TASK_CALLBACK(silc_client_connect_to_server_final);
-SILC_TASK_CALLBACK(silc_client_rekey_callback);
SILC_TASK_CALLBACK(silc_client_rekey_final);
static bool silc_client_packet_parse(SilcPacketParserContext *parser_context,
void *context);
-static void silc_client_packet_parse_type(SilcClient client,
+static void silc_client_packet_parse_type(SilcClient client,
SilcSocketConnection sock,
SilcPacketContext *packet);
void silc_client_resolve_auth_method(bool success,
the client. The `application' is application specific user data pointer
and caller must free it. */
-SilcClient silc_client_alloc(SilcClientOperations *ops,
+SilcClient silc_client_alloc(SilcClientOperations *ops,
SilcClientParams *params,
void *application,
- const char *silc_version)
+ const char *version_string)
{
SilcClient new_client;
new_client->internal = silc_calloc(1, sizeof(*new_client->internal));
new_client->internal->ops = ops;
- new_client->internal->params =
+ new_client->internal->params =
silc_calloc(1, sizeof(*new_client->internal->params));
- new_client->internal->silc_client_version = strdup(silc_version);
+ if (!version_string)
+ version_string = silc_version_string;
+ new_client->internal->silc_client_version = strdup(version_string);
if (params)
memcpy(new_client->internal->params, params, sizeof(*params));
if (client->rng)
silc_rng_free(client->rng);
+ silc_cipher_unregister_all();
+ silc_pkcs_unregister_all();
+ silc_hash_unregister_all();
+ silc_hmac_unregister_all();
+
+ silc_hash_free(client->md5hash);
+ silc_hash_free(client->sha1hash);
+ silc_hmac_free(client->internal->md5hmac);
+ silc_hmac_free(client->internal->sha1hmac);
+ silc_cipher_free(client->internal->none_cipher);
silc_free(client->internal->params);
silc_free(client->internal->silc_client_version);
silc_free(client->internal);
the client ready to be run. One must call silc_client_run to run the
client. Returns FALSE if error occured, TRUE otherwise. */
-int silc_client_init(SilcClient client)
+bool silc_client_init(SilcClient client)
{
SILC_LOG_DEBUG(("Initializing client"));
+ assert(client);
+ assert(client->username);
+ assert(client->hostname);
+ assert(client->realname);
+
+ /* Initialize the crypto library. If application has done this already
+ this has no effect. Also, we will not be overriding something
+ application might have registered earlier. */
+ silc_cipher_register_default();
+ silc_pkcs_register_default();
+ silc_hash_register_default();
+ silc_hmac_register_default();
+
/* Initialize hash functions for client to use */
- silc_hash_alloc("md5", &client->internal->md5hash);
- silc_hash_alloc("sha1", &client->internal->sha1hash);
+ silc_hash_alloc("md5", &client->md5hash);
+ silc_hash_alloc("sha1", &client->sha1hash);
/* Initialize none cipher */
silc_cipher_alloc("none", &client->internal->none_cipher);
silc_client_protocols_register();
/* Initialize the scheduler */
- client->schedule =
+ client->schedule =
silc_schedule_init(client->internal->params->task_max ?
- client->internal->params->task_max : 200);
+ client->internal->params->task_max : 200, client);
if (!client->schedule)
return FALSE;
{
SILC_LOG_DEBUG(("Running client"));
+ assert(client);
+ assert(client->pkcs);
+ assert(client->public_key);
+ assert(client->private_key);
+
/* Start the scheduler, the heart of the SILC client. When this returns
the program will be terminated. */
silc_schedule(client->schedule);
connection to the connection table and returns a pointer to it. A client
can have multiple connections to multiple servers. Every connection must
be added to the client using this function. User data `context' may
- be sent as argument. This function is normally used only if the
+ be sent as argument. This function is normally used only if the
application performed the connecting outside the library. The library
however may use this internally. */
-SilcClientConnection silc_client_add_connection(SilcClient client,
- char *hostname,
- int port,
- void *context)
+SilcClientConnection
+silc_client_add_connection(SilcClient client,
+ SilcClientConnectionParams *params,
+ char *hostname, int port, void *context)
{
SilcClientConnection conn;
int i;
+ SILC_LOG_DEBUG(("Adding new connection to %s:%d", hostname, port));
+
conn = silc_calloc(1, sizeof(*conn));
+ conn->internal = silc_calloc(1, sizeof(*conn->internal));
/* Initialize ID caches */
- conn->client_cache = silc_idcache_alloc(0, SILC_ID_CLIENT,
- silc_client_entry_destructor);
- conn->channel_cache = silc_idcache_alloc(0, SILC_ID_CHANNEL, NULL);
- conn->server_cache = silc_idcache_alloc(0, SILC_ID_SERVER, NULL);
conn->client = client;
conn->remote_host = strdup(hostname);
conn->remote_port = port;
conn->context = context;
- conn->pending_commands = silc_dlist_init();
- conn->ftp_sessions = silc_dlist_init();
+ conn->internal->client_cache =
+ silc_idcache_alloc(0, SILC_ID_CLIENT, silc_client_entry_destructor);
+ conn->internal->channel_cache = silc_idcache_alloc(0, SILC_ID_CHANNEL, NULL);
+ conn->internal->server_cache = silc_idcache_alloc(0, SILC_ID_SERVER, NULL);
+ conn->internal->pending_commands = silc_dlist_init();
+ conn->internal->ftp_sessions = silc_dlist_init();
+
+ if (params) {
+ if (params->detach_data)
+ conn->internal->params.detach_data =
+ silc_memdup(params->detach_data,
+ params->detach_data_len);
+ conn->internal->params.detach_data_len = params->detach_data_len;
+ }
/* Add the connection to connections table */
for (i = 0; i < client->internal->conns_count; i++)
return conn;
}
- client->internal->conns =
+ client->internal->conns =
silc_realloc(client->internal->conns, sizeof(*client->internal->conns)
* (client->internal->conns_count + 1));
client->internal->conns[client->internal->conns_count] = conn;
for (i = 0; i < client->internal->conns_count; i++)
if (client->internal->conns[i] == conn) {
+ /* Free all cache entries */
+ SilcIDCacheList list;
+ SilcIDCacheEntry entry;
+ SilcClientCommandPending *r;
+ bool ret;
+
+ if (silc_idcache_get_all(conn->internal->client_cache, &list)) {
+ ret = silc_idcache_list_first(list, &entry);
+ while (ret) {
+ silc_client_del_client(client, conn, entry->context);
+ ret = silc_idcache_list_next(list, &entry);
+ }
+ silc_idcache_list_free(list);
+ }
+
+ if (silc_idcache_get_all(conn->internal->channel_cache, &list)) {
+ ret = silc_idcache_list_first(list, &entry);
+ while (ret) {
+ silc_client_del_channel(client, conn, entry->context);
+ ret = silc_idcache_list_next(list, &entry);
+ }
+ silc_idcache_list_free(list);
+ }
+
+ if (silc_idcache_get_all(conn->internal->server_cache, &list)) {
+ ret = silc_idcache_list_first(list, &entry);
+ while (ret) {
+ silc_client_del_server(client, conn, entry->context);
+ ret = silc_idcache_list_next(list, &entry);
+ }
+ silc_idcache_list_free(list);
+ }
+
+ /* Clear ID caches */
+ if (conn->internal->client_cache)
+ silc_idcache_free(conn->internal->client_cache);
+ if (conn->internal->channel_cache)
+ silc_idcache_free(conn->internal->channel_cache);
+ if (conn->internal->server_cache)
+ silc_idcache_free(conn->internal->server_cache);
- silc_idcache_free(conn->client_cache);
- silc_idcache_free(conn->channel_cache);
- silc_idcache_free(conn->server_cache);
- if (conn->pending_commands)
- silc_dlist_uninit(conn->pending_commands);
+ /* Free data (my ID is freed in above silc_client_del_client).
+ conn->nickname is freed when freeing the local_entry->nickname. */
silc_free(conn->remote_host);
- silc_dlist_uninit(conn->ftp_sessions);
+ silc_free(conn->local_id_data);
+ if (conn->internal->send_key)
+ silc_cipher_free(conn->internal->send_key);
+ if (conn->internal->receive_key)
+ silc_cipher_free(conn->internal->receive_key);
+ if (conn->internal->hmac_send)
+ silc_hmac_free(conn->internal->hmac_send);
+ if (conn->internal->hmac_receive)
+ silc_hmac_free(conn->internal->hmac_receive);
+ silc_free(conn->internal->rekey);
+
+ if (conn->internal->active_session) {
+ if (conn->sock)
+ conn->sock->user_data = NULL;
+ silc_client_ftp_session_free(conn->internal->active_session);
+ conn->internal->active_session = NULL;
+ }
+
+ silc_client_ftp_free_sessions(client, conn);
+
+ if (conn->internal->pending_commands) {
+ silc_dlist_start(conn->internal->pending_commands);
+ while ((r = silc_dlist_get(conn->internal->pending_commands))
+ != SILC_LIST_END)
+ silc_dlist_del(conn->internal->pending_commands, r);
+ silc_dlist_uninit(conn->internal->pending_commands);
+ }
+
+ silc_free(conn->internal);
+ memset(conn, 0, sizeof(*conn));
silc_free(conn);
client->internal->conns[i] = NULL;
int i;
if (!client->internal->sockets) {
- client->internal->sockets =
+ client->internal->sockets =
silc_calloc(1, sizeof(*client->internal->sockets));
client->internal->sockets[0] = silc_socket_dup(sock);
client->internal->sockets_count = 1;
}
}
- client->internal->sockets =
- silc_realloc(client->internal->sockets,
+ client->internal->sockets =
+ silc_realloc(client->internal->sockets,
sizeof(*client->internal->sockets) *
(client->internal->sockets_count + 1));
- client->internal->sockets[client->internal->sockets_count] =
+ client->internal->sockets[client->internal->sockets_count] =
silc_socket_dup(sock);
client->internal->sockets_count++;
}
}
}
-static int
+static int
silc_client_connect_to_server_internal(SilcClientInternalConnectContext *ctx)
{
int sock;
/* Register task that will receive the async connect and will
read the result. */
- ctx->task = silc_schedule_task_add(ctx->client->schedule, sock,
+ ctx->task = silc_schedule_task_add(ctx->client->schedule, sock,
silc_client_connect_to_server_start,
- (void *)ctx, 0, 0,
+ (void *)ctx, 0, 0,
SILC_TASK_FD,
SILC_TASK_PRI_NORMAL);
- silc_schedule_set_listen_fd(ctx->client->schedule, sock, SILC_TASK_WRITE);
+ silc_schedule_set_listen_fd(ctx->client->schedule, sock, SILC_TASK_WRITE,
+ FALSE);
ctx->sock = sock;
}
/* Connects to remote server. This is the main routine used to connect
- to SILC server. Returns -1 on error and the created socket otherwise.
+ to SILC server. Returns -1 on error and the created socket otherwise.
The `context' is user context that is saved into the SilcClientConnection
that is created after the connection is created. Note that application
may handle the connecting process outside the library. If this is the
case then this function is not used at all. When the connecting is
done the `connect' client operation is called. */
-int silc_client_connect_to_server(SilcClient client, int port,
- char *host, void *context)
+int silc_client_connect_to_server(SilcClient client,
+ SilcClientConnectionParams *params,
+ int port, char *host, void *context)
{
SilcClientInternalConnectContext *ctx;
SilcClientConnection conn;
SILC_LOG_DEBUG(("Connecting to port %d of server %s",
port, host));
- conn = silc_client_add_connection(client, host, port, context);
+ conn = silc_client_add_connection(client, params, host, port, context);
- client->internal->ops->say(client, conn, SILC_CLIENT_MESSAGE_AUDIT,
+ client->internal->ops->say(client, conn, SILC_CLIENT_MESSAGE_AUDIT,
"Connecting to port %d of server %s", port, host);
/* Allocate internal context for connection process. This is
ctx->client = client;
ctx->conn = conn;
ctx->host = strdup(host);
- ctx->port = port;
+ ctx->port = port ? port : 706;
ctx->tries = 0;
/* Do the actual connecting process */
SILC_LOG_DEBUG(("Start"));
- /* XXX We should most likely use the resolved host name instead of the
- one user provided for us. */
- silc_free(conn->sock->hostname);
- conn->sock->hostname = strdup(conn->remote_host);
+ if (conn->sock->hostname) {
+ silc_free(conn->remote_host);
+ conn->remote_host = strdup(conn->sock->hostname);
+ } else {
+ conn->sock->hostname = strdup(conn->remote_host);
+ }
if (!conn->sock->ip)
- conn->sock->ip = strdup(conn->remote_host);
+ conn->sock->ip = strdup(conn->sock->hostname);
conn->sock->port = conn->remote_port;
/* Allocate internal Key Exchange context. This is sent to the
/* Perform key exchange protocol. silc_client_connect_to_server_final
will be called after the protocol is finished. */
- silc_protocol_alloc(SILC_PROTOCOL_CLIENT_KEY_EXCHANGE,
+ silc_protocol_alloc(SILC_PROTOCOL_CLIENT_KEY_EXCHANGE,
&protocol, (void *)proto_ctx,
silc_client_connect_to_server_second);
if (!protocol) {
client->internal->ops->say(client, conn, SILC_CLIENT_MESSAGE_ERROR,
"Error: Could not start key exchange protocol");
silc_net_close_connection(conn->sock->sock);
- client->internal->ops->connect(client, conn, FALSE);
+ client->internal->ops->connected(client, conn, SILC_CLIENT_CONN_ERROR);
return;
}
conn->sock->protocol = protocol;
/* Register the connection for network input and output. This sets
- that scheduler will listen for incoming packets for this connection
+ that scheduler will listen for incoming packets for this connection
and sets that outgoing packets may be sent to this connection as well.
- However, this doesn't set the scheduler for outgoing traffic, it will
+ However, this doesn't set the scheduler for outgoing traffic, it will
be set separately by calling SILC_CLIENT_SET_CONNECTION_FOR_OUTPUT,
later when outgoing data is available. */
context = (void *)client;
SilcClientConnection conn,
int fd)
{
+ assert(client->pkcs);
+ assert(client->public_key);
+ assert(client->private_key);
+
/* Allocate new socket connection object */
silc_socket_alloc(fd, SILC_SOCKET_TYPE_SERVER, (void *)conn, &conn->sock);
/* Sometimes when doing quick reconnects the new socket may be same as
- the old one and there might be pending stuff for the old socket.
+ the old one and there might be pending stuff for the old socket.
If new one is same then those pending sutff might cause problems.
Make sure they do not do that. */
silc_schedule_task_del_by_fd(client->schedule, fd);
conn, client->schedule);
}
-/* Callback called when error has occurred during connecting to the server.
- The `connect' client operation will be called. */
+/* Callback called when error has occurred during connecting (KE) to
+ the server. The `connect' client operation will be called. */
SILC_TASK_CALLBACK(silc_client_connect_failure)
{
- SilcClientKEInternalContext *ctx =
+ SilcClientKEInternalContext *ctx =
(SilcClientKEInternalContext *)context;
SilcClient client = (SilcClient)ctx->client;
- client->internal->ops->connect(client, ctx->sock->user_data, FALSE);
+ client->internal->ops->connected(client, ctx->sock->user_data,
+ SILC_CLIENT_CONN_ERROR);
if (ctx->packet)
silc_packet_context_free(ctx->packet);
silc_free(ctx);
}
+/* Callback called when error has occurred during connecting (auth) to
+ the server. The `connect' client operation will be called. */
+
+SILC_TASK_CALLBACK(silc_client_connect_failure_auth)
+{
+ SilcClientConnAuthInternalContext *ctx =
+ (SilcClientConnAuthInternalContext *)context;
+ SilcClient client = (SilcClient)ctx->client;
+
+ client->internal->ops->connected(client, ctx->sock->user_data,
+ SILC_CLIENT_CONN_ERROR);
+ silc_free(ctx);
+}
+
/* Start of the connection to the remote server. This is called after
succesful TCP/IP connection has been established to the remote host. */
client->internal->ops->say(client, conn, SILC_CLIENT_MESSAGE_ERROR,
"Could not connect to server %s: %s",
ctx->host, strerror(opt));
- client->internal->ops->say(client, conn, SILC_CLIENT_MESSAGE_AUDIT,
- "Connecting to port %d of server %s resumed",
+ client->internal->ops->say(client, conn, SILC_CLIENT_MESSAGE_AUDIT,
+ "Connecting to port %d of server %s resumed",
ctx->port, ctx->host);
/* Unregister old connection try */
silc_free(ctx);
/* Notify application of failure */
- client->internal->ops->connect(client, conn, FALSE);
- silc_client_del_connection(client, conn);
+ client->internal->ops->connected(client, conn, SILC_CLIENT_CONN_ERROR);
}
return;
}
silc_client_start_key_exchange(client, conn, fd);
}
-/* Second part of the connecting to the server. This executed
+/* Second part of the connecting to the server. This executed
authentication protocol. */
SILC_TASK_CALLBACK(silc_client_connect_to_server_second)
{
SilcProtocol protocol = (SilcProtocol)context;
- SilcClientKEInternalContext *ctx =
+ SilcClientKEInternalContext *ctx =
(SilcClientKEInternalContext *)protocol->context;
SilcClient client = (SilcClient)ctx->client;
SilcSocketConnection sock = NULL;
silc_protocol_free(protocol);
if (ctx->packet)
silc_packet_context_free(ctx->packet);
+ ctx->packet = NULL;
silc_free(ctx);
sock->protocol = NULL;
/* Resolve the authentication method to be used in this connection. The
completion callback is called after the application has resolved
the authentication method. */
- client->internal->ops->get_auth_method(client, sock->user_data,
+ client->internal->ops->get_auth_method(client, sock->user_data,
sock->hostname,
- sock->port,
+ sock->port,
silc_client_resolve_auth_method,
proto_ctx);
}
/* Authentication method resolving callback. Application calls this function
- after we've called the client->internal->ops->get_auth_method
+ after we've called the client->internal->ops->get_auth_method
client operation to resolve the authentication method. We will continue
the executiong of the protocol in this function. */
proto_ctx->auth_meth = auth_meth;
- if (auth_data && auth_data_len) {
+ if (success && auth_data && auth_data_len) {
+
+ /* Passphrase must be UTF-8 encoded, if it isn't encode it */
+ if (auth_meth == SILC_AUTH_PASSWORD &&
+ !silc_utf8_valid(auth_data, auth_data_len)) {
+ int payload_len = 0;
+ unsigned char *autf8 = NULL;
+ payload_len = silc_utf8_encoded_len(auth_data, auth_data_len,
+ SILC_STRING_ASCII);
+ autf8 = silc_calloc(payload_len, sizeof(*autf8));
+ auth_data_len = silc_utf8_encode(auth_data, auth_data_len,
+ SILC_STRING_ASCII, autf8, payload_len);
+ auth_data = autf8;
+ }
+
proto_ctx->auth_data = silc_memdup(auth_data, auth_data_len);
proto_ctx->auth_data_len = auth_data_len;
}
/* Allocate the authenteication protocol and execute it. */
- silc_protocol_alloc(SILC_PROTOCOL_CLIENT_CONNECTION_AUTH,
- &proto_ctx->sock->protocol, (void *)proto_ctx,
+ silc_protocol_alloc(SILC_PROTOCOL_CLIENT_CONNECTION_AUTH,
+ &proto_ctx->sock->protocol, (void *)proto_ctx,
silc_client_connect_to_server_final);
/* Execute the protocol */
SILC_TASK_CALLBACK(silc_client_connect_to_server_final)
{
SilcProtocol protocol = (SilcProtocol)context;
- SilcClientConnAuthInternalContext *ctx =
+ SilcClientConnAuthInternalContext *ctx =
(SilcClientConnAuthInternalContext *)protocol->context;
SilcClient client = (SilcClient)ctx->client;
SilcClientConnection conn = (SilcClientConnection)ctx->sock->user_data;
protocol->state == SILC_PROTOCOL_STATE_FAILURE) {
/* Error occured during protocol */
SILC_LOG_DEBUG(("Error during authentication protocol"));
- silc_protocol_free(protocol);
- if (ctx->auth_data)
- silc_free(ctx->auth_data);
- if (ctx->ske)
- silc_ske_free(ctx->ske);
- if (ctx->dest_id)
- silc_free(ctx->dest_id);
- conn->sock->protocol = NULL;
- silc_socket_free(ctx->sock);
-
- /* Notify application of failure */
- silc_schedule_task_add(client->schedule, ctx->sock->sock,
- silc_client_connect_failure, ctx,
- 0, 1, SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
- return;
+ goto err;
}
- /* Send NEW_CLIENT packet to the server. We will become registered
- to the SILC network after sending this packet and we will receive
- client ID from the server. */
- packet = silc_buffer_alloc(2 + 2 + strlen(client->username) +
- strlen(client->realname));
- silc_buffer_pull_tail(packet, SILC_BUFFER_END(packet));
- silc_buffer_format(packet,
- SILC_STR_UI_SHORT(strlen(client->username)),
- SILC_STR_UI_XNSTRING(client->username,
- strlen(client->username)),
- SILC_STR_UI_SHORT(strlen(client->realname)),
- SILC_STR_UI_XNSTRING(client->realname,
- strlen(client->realname)),
- SILC_STR_END);
+ if (conn->internal->params.detach_data) {
+ /* Send RESUME_CLIENT packet to the server, which is used to resume
+ old detached session back. */
+ SilcBuffer auth;
+ SilcClientID *old_client_id;
+ unsigned char *old_id;
+ SilcUInt16 old_id_len;
+
+ if (!silc_client_process_detach_data(client, conn, &old_id, &old_id_len))
+ goto err;
+
+ old_client_id = silc_id_str2id(old_id, old_id_len, SILC_ID_CLIENT);
+ if (!old_client_id) {
+ silc_free(old_id);
+ goto err;
+ }
- /* Send the packet */
- silc_client_packet_send(client, ctx->sock, SILC_PACKET_NEW_CLIENT,
- NULL, 0, NULL, NULL,
- packet->data, packet->len, TRUE);
- silc_buffer_free(packet);
+ /* Generate authentication data that server will verify */
+ auth = silc_auth_public_key_auth_generate(client->public_key,
+ client->private_key,
+ client->rng,
+ conn->internal->hash,
+ old_client_id, SILC_ID_CLIENT);
+ if (!auth) {
+ silc_free(old_client_id);
+ silc_free(old_id);
+ goto err;
+ }
+
+ packet = silc_buffer_alloc_size(2 + old_id_len + auth->len);
+ silc_buffer_format(packet,
+ SILC_STR_UI_SHORT(old_id_len),
+ SILC_STR_UI_XNSTRING(old_id, old_id_len),
+ SILC_STR_UI_XNSTRING(auth->data, auth->len),
+ SILC_STR_END);
+
+ /* Send the packet */
+ silc_client_packet_send(client, ctx->sock, SILC_PACKET_RESUME_CLIENT,
+ NULL, 0, NULL, NULL,
+ packet->data, packet->len, TRUE);
+ silc_buffer_free(packet);
+ silc_buffer_free(auth);
+ silc_free(old_client_id);
+ silc_free(old_id);
+ } else {
+ /* Send NEW_CLIENT packet to the server. We will become registered
+ to the SILC network after sending this packet and we will receive
+ client ID from the server. */
+ packet = silc_buffer_alloc(2 + 2 + strlen(client->username) +
+ strlen(client->realname));
+ silc_buffer_pull_tail(packet, SILC_BUFFER_END(packet));
+ silc_buffer_format(packet,
+ SILC_STR_UI_SHORT(strlen(client->username)),
+ SILC_STR_UI_XNSTRING(client->username,
+ strlen(client->username)),
+ SILC_STR_UI_SHORT(strlen(client->realname)),
+ SILC_STR_UI_XNSTRING(client->realname,
+ strlen(client->realname)),
+ SILC_STR_END);
+
+ /* Send the packet */
+ silc_client_packet_send(client, ctx->sock, SILC_PACKET_NEW_CLIENT,
+ NULL, 0, NULL, NULL,
+ packet->data, packet->len, TRUE);
+ silc_buffer_free(packet);
+ }
/* Save remote ID. */
conn->remote_id = ctx->dest_id;
conn->remote_id_data_len = silc_id_get_len(ctx->dest_id, SILC_ID_SERVER);
/* Register re-key timeout */
- conn->rekey->timeout = client->internal->params->rekey_secs;
- conn->rekey->context = (void *)client;
- silc_schedule_task_add(client->schedule, conn->sock->sock,
+ conn->internal->rekey->timeout = client->internal->params->rekey_secs;
+ conn->internal->rekey->context = (void *)client;
+ silc_schedule_task_add(client->schedule, conn->sock->sock,
silc_client_rekey_callback,
- (void *)conn->sock, conn->rekey->timeout, 0,
+ (void *)conn->sock, conn->internal->rekey->timeout, 0,
SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
silc_protocol_free(protocol);
- if (ctx->auth_data)
- silc_free(ctx->auth_data);
+ silc_free(ctx->auth_data);
if (ctx->ske)
silc_ske_free(ctx->ske);
silc_socket_free(ctx->sock);
silc_free(ctx);
conn->sock->protocol = NULL;
+ return;
+
+ err:
+ silc_protocol_free(protocol);
+ silc_free(ctx->auth_data);
+ silc_free(ctx->dest_id);
+ if (ctx->ske)
+ silc_ske_free(ctx->ske);
+ conn->sock->protocol = NULL;
+ silc_socket_free(ctx->sock);
+
+ /* Notify application of failure */
+ silc_schedule_task_add(client->schedule, ctx->sock->sock,
+ silc_client_connect_failure_auth, ctx,
+ 0, 1, SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
}
/* Internal routine that sends packet or marks packet to be sent. This
if (ret != -2)
return ret;
- /* Mark that there is some outgoing data available for this connection.
+ /* Mark that there is some outgoing data available for this connection.
This call sets the connection both for input and output (the input
- is set always and this call keeps the input setting, actually).
+ is set always and this call keeps the input setting, actually).
Actual data sending is performed by silc_client_packet_process. */
SILC_CLIENT_SET_CONNECTION_FOR_OUTPUT(client->schedule, sock->sock);
if (SILC_IS_DISCONNECTED(sock))
return;
- if (sock->outbuf->data - sock->outbuf->head)
- silc_buffer_push(sock->outbuf, sock->outbuf->data - sock->outbuf->head);
-
ret = silc_packet_send(sock, TRUE);
/* If returned -2 could not write to connection now, will do
/* Error */
if (ret == -1)
return;
-
+
/* The packet has been sent and now it is time to set the connection
- back to only for input. When there is again some outgoing data
- available for this connection it will be set for output as well.
+ back to only for input. When there is again some outgoing data
+ available for this connection it will be set for output as well.
This call clears the output setting and sets it only for input. */
SILC_CLIENT_SET_CONNECTION_FOR_INPUT(client->schedule, fd);
SILC_UNSET_OUTBUF_PENDING(sock);
ret = silc_packet_receive(sock);
if (ret < 0)
return;
-
+
/* EOF */
if (ret == 0) {
SILC_LOG_DEBUG(("Read EOF"));
close the connection */
if (SILC_IS_DISCONNECTING(sock)) {
if (sock == conn->sock && sock->type != SILC_SOCKET_TYPE_CLIENT)
- client->internal->ops->disconnect(client, conn);
- silc_client_close_connection(client, sock, conn);
+ client->internal->ops->disconnected(client, conn, 0, NULL);
+ silc_client_close_connection_real(client, sock, conn);
return;
}
-
+
SILC_LOG_DEBUG(("EOF from connection %d", sock->sock));
if (sock == conn->sock && sock->type != SILC_SOCKET_TYPE_CLIENT)
- client->internal->ops->disconnect(client, conn);
- silc_client_close_connection(client, sock, conn);
+ client->internal->ops->disconnected(client, conn, 0, NULL);
+ silc_client_close_connection_real(client, sock, conn);
return;
}
/* Process the packet. This will call the parser that will then
decrypt and parse the packet. */
if (sock->type != SILC_SOCKET_TYPE_UNKNOWN)
- silc_packet_receive_process(sock, FALSE, conn->receive_key,
- conn->hmac_receive, conn->psn_receive,
+ silc_packet_receive_process(sock, FALSE, conn->internal->receive_key,
+ conn->internal->hmac_receive,
+ conn->internal->psn_receive,
silc_client_packet_parse, client);
else
- silc_packet_receive_process(sock, FALSE, NULL, NULL, 0,
+ silc_packet_receive_process(sock, FALSE, NULL, NULL, 0,
silc_client_packet_parse, client);
}
}
SilcPacketContext *packet = parser_context->packet;
SilcPacketType ret;
- if (conn && conn->hmac_receive && conn->sock == sock)
- conn->psn_receive = parser_context->packet->sequence + 1;
+ if (conn && conn->internal->hmac_receive && conn->sock == sock)
+ conn->internal->psn_receive = parser_context->packet->sequence + 1;
/* Parse the packet immediately */
if (parser_context->normal)
- ret = silc_packet_parse(packet, conn->receive_key);
+ ret = silc_packet_parse(packet, conn->internal->receive_key);
else
- ret = silc_packet_parse_special(packet, conn->receive_key);
+ ret = silc_packet_parse_special(packet, conn->internal->receive_key);
if (ret == SILC_PACKET_NONE) {
silc_packet_context_free(packet);
silc_free(parser_context);
return FALSE;
}
-
+
/* If protocol for this connection is key exchange or rekey then we'll
process all packets synchronously, since there might be packets in
queue that we are not able to decrypt without first processing the
packets before them. */
- if ((ret == SILC_PACKET_REKEY || ret == SILC_PACKET_REKEY_DONE) ||
- (sock->protocol && sock->protocol->protocol &&
- (sock->protocol->protocol->type == SILC_PROTOCOL_CLIENT_KEY_EXCHANGE ||
- sock->protocol->protocol->type == SILC_PROTOCOL_CLIENT_REKEY))) {
+ if (sock->protocol && sock->protocol->protocol &&
+ (sock->protocol->protocol->type == SILC_PROTOCOL_CLIENT_KEY_EXCHANGE ||
+ sock->protocol->protocol->type == SILC_PROTOCOL_CLIENT_REKEY)) {
/* Parse the incoming packet type */
silc_client_packet_parse_type(client, sock, packet);
silc_free(parser_context);
/* Reprocess the buffer since we'll return FALSE. This is because
- the `conn->receive_key' might have become valid by processing
+ the `conn->internal->receive_key' might have become valid by processing
the previous packet */
if (sock->type != SILC_SOCKET_TYPE_UNKNOWN)
- silc_packet_receive_process(sock, FALSE, conn->receive_key,
- conn->hmac_receive, conn->psn_receive,
+ silc_packet_receive_process(sock, FALSE, conn->internal->receive_key,
+ conn->internal->hmac_receive,
+ conn->internal->psn_receive,
silc_client_packet_parse, client);
else
- silc_packet_receive_process(sock, FALSE, NULL, NULL, 0,
+ silc_packet_receive_process(sock, FALSE, NULL, NULL, 0,
silc_client_packet_parse, client);
-
+
return FALSE;
}
/* Parses the packet type and calls what ever routines the packet type
requires. This is done for all incoming packets. */
-void silc_client_packet_parse_type(SilcClient client,
+void silc_client_packet_parse_type(SilcClient client,
SilcSocketConnection sock,
SilcPacketContext *packet)
{
SilcBuffer buffer = packet->buffer;
SilcPacketType type = packet->type;
- SILC_LOG_DEBUG(("Parsing packet type %d", type));
+ SILC_LOG_DEBUG(("Parsing %s packet", silc_get_packet_name(type)));
/* Parse the packet type */
switch(type) {
+
case SILC_PACKET_DISCONNECT:
silc_client_disconnected_by_server(client, sock, buffer);
break;
+
case SILC_PACKET_SUCCESS:
/*
* Success received for something. For now we can have only
if (sock->protocol)
silc_protocol_execute(sock->protocol, client->schedule, 0, 0);
break;
+
case SILC_PACKET_FAILURE:
/*
- * Failure received for some protocol. Set the protocol state to
+ * Failure received for some protocol. Set the protocol state to
* error and call the protocol callback. This fill cause error on
* protocol and it will call the final callback.
*/
silc_client_process_failure(client, sock, packet);
break;
+
case SILC_PACKET_REJECT:
break;
case SILC_PACKET_NOTIFY:
/*
- * Received notify message
+ * Received notify message
*/
silc_client_notify_by_server(client, sock, packet);
break;
*/
silc_client_channel_message(client, sock, packet);
break;
+
case SILC_PACKET_CHANNEL_KEY:
/*
* Received key for a channel. By receiving this key the client will be
*/
silc_client_private_message(client, sock, packet);
break;
+
case SILC_PACKET_PRIVATE_MESSAGE_KEY:
/*
* Received private message key
*/
break;
+ case SILC_PACKET_COMMAND:
+ /*
+ * Received command packet, a special case since normally client
+ * does not receive commands.
+ */
+ silc_client_command_process(client, sock, packet);
+ break;
+
case SILC_PACKET_COMMAND_REPLY:
/*
* Recived reply for a command
break;
case SILC_PACKET_KEY_EXCHANGE:
- if (sock->protocol && sock->protocol->protocol &&
+ if (sock->protocol && sock->protocol->protocol &&
sock->protocol->protocol->type == SILC_PROTOCOL_CLIENT_KEY_EXCHANGE) {
- SilcClientKEInternalContext *proto_ctx =
+ SilcClientKEInternalContext *proto_ctx =
(SilcClientKEInternalContext *)sock->protocol->context;
proto_ctx->packet = silc_packet_context_dup(packet);
break;
case SILC_PACKET_KEY_EXCHANGE_1:
- if (sock->protocol && sock->protocol->protocol &&
+ if (sock->protocol && sock->protocol->protocol &&
(sock->protocol->protocol->type == SILC_PROTOCOL_CLIENT_KEY_EXCHANGE ||
sock->protocol->protocol->type == SILC_PROTOCOL_CLIENT_REKEY)) {
if (sock->protocol->protocol->type == SILC_PROTOCOL_CLIENT_REKEY) {
- SilcClientRekeyInternalContext *proto_ctx =
+ SilcClientRekeyInternalContext *proto_ctx =
(SilcClientRekeyInternalContext *)sock->protocol->context;
-
+
if (proto_ctx->packet)
silc_packet_context_free(proto_ctx->packet);
-
+
proto_ctx->packet = silc_packet_context_dup(packet);
/* Let the protocol handle the packet */
silc_protocol_execute(sock->protocol, client->schedule, 0, 0);
} else {
- SilcClientKEInternalContext *proto_ctx =
+ SilcClientKEInternalContext *proto_ctx =
(SilcClientKEInternalContext *)sock->protocol->context;
-
+
if (proto_ctx->packet)
silc_packet_context_free(proto_ctx->packet);
-
+
proto_ctx->packet = silc_packet_context_dup(packet);
proto_ctx->dest_id_type = packet->src_id_type;
proto_ctx->dest_id = silc_id_str2id(packet->src_id, packet->src_id_len,
packet->src_id_type);
if (!proto_ctx->dest_id)
break;
-
+
/* Let the protocol handle the packet */
silc_protocol_execute(sock->protocol, client->schedule, 0, 0);
}
"protocol active, packet dropped."));
}
break;
+
case SILC_PACKET_KEY_EXCHANGE_2:
- if (sock->protocol && sock->protocol->protocol &&
+ if (sock->protocol && sock->protocol->protocol &&
(sock->protocol->protocol->type == SILC_PROTOCOL_CLIENT_KEY_EXCHANGE ||
sock->protocol->protocol->type == SILC_PROTOCOL_CLIENT_REKEY)) {
if (sock->protocol->protocol->type == SILC_PROTOCOL_CLIENT_REKEY) {
- SilcClientRekeyInternalContext *proto_ctx =
+ SilcClientRekeyInternalContext *proto_ctx =
(SilcClientRekeyInternalContext *)sock->protocol->context;
-
+
if (proto_ctx->packet)
silc_packet_context_free(proto_ctx->packet);
-
+
proto_ctx->packet = silc_packet_context_dup(packet);
/* Let the protocol handle the packet */
silc_protocol_execute(sock->protocol, client->schedule, 0, 0);
} else {
- SilcClientKEInternalContext *proto_ctx =
+ SilcClientKEInternalContext *proto_ctx =
(SilcClientKEInternalContext *)sock->protocol->context;
-
+
if (proto_ctx->packet)
silc_packet_context_free(proto_ctx->packet);
if (proto_ctx->dest_id)
packet->src_id_type);
if (!proto_ctx->dest_id)
break;
-
+
/* Let the protocol handle the packet */
silc_protocol_execute(sock->protocol, client->schedule, 0, 0);
}
{
/*
* Received new ID from server. This packet is received at
- * the connection to the server. New ID is also received when
+ * the connection to the server. New ID is also received when
* user changes nickname but in that case the new ID is received
* as command reply and not as this packet type.
*/
case SILC_PACKET_REKEY_DONE:
SILC_LOG_DEBUG(("Re-key done packet"));
- if (sock->protocol && sock->protocol->protocol &&
+ if (sock->protocol && sock->protocol->protocol &&
sock->protocol->protocol->type == SILC_PROTOCOL_CLIENT_REKEY) {
- SilcClientRekeyInternalContext *proto_ctx =
+ SilcClientRekeyInternalContext *proto_ctx =
(SilcClientRekeyInternalContext *)sock->protocol->context;
-
+
if (proto_ctx->packet)
silc_packet_context_free(proto_ctx->packet);
-
+
proto_ctx->packet = silc_packet_context_dup(packet);
/* Let the protocol handle the packet */
silc_protocol_execute(sock->protocol, client->schedule, 0, 0);
else
/* Let the protocol handle the packet */
- silc_protocol_execute(sock->protocol, client->schedule,
+ silc_protocol_execute(sock->protocol, client->schedule,
0, 100000);
} else {
SILC_LOG_ERROR(("Received Re-key done packet but no re-key "
will be derived from sock argument. Otherwise the valid arguments sent
are used. */
-void silc_client_packet_send(SilcClient client,
+void silc_client_packet_send(SilcClient client,
SilcSocketConnection sock,
- SilcPacketType type,
+ SilcPacketType type,
void *dst_id,
SilcIdType dst_id_type,
SilcCipher cipher,
SilcHmac hmac,
- unsigned char *data,
- SilcUInt32 data_len,
- int force_send)
+ unsigned char *data,
+ SilcUInt32 data_len,
+ bool force_send)
{
SilcPacketContext packetdata;
+ const SilcBufferStruct packet;
int block_len;
SilcUInt32 sequence = 0;
/* Get data used in the packet sending, keys and stuff */
if ((!cipher || !hmac || !dst_id) && sock->user_data) {
- if (!cipher && ((SilcClientConnection)sock->user_data)->send_key)
- cipher = ((SilcClientConnection)sock->user_data)->send_key;
+ if (!cipher && ((SilcClientConnection)sock->user_data)->internal->send_key)
+ cipher = ((SilcClientConnection)sock->user_data)->internal->send_key;
- if (!hmac && ((SilcClientConnection)sock->user_data)->hmac_send)
- hmac = ((SilcClientConnection)sock->user_data)->hmac_send;
+ if (!hmac && ((SilcClientConnection)sock->user_data)->internal->hmac_send)
+ hmac = ((SilcClientConnection)sock->user_data)->internal->hmac_send;
if (!dst_id && ((SilcClientConnection)sock->user_data)->remote_id) {
dst_id = ((SilcClientConnection)sock->user_data)->remote_id;
}
if (hmac)
- sequence = ((SilcClientConnection)sock->user_data)->psn_send++;
+ sequence = ((SilcClientConnection)sock->user_data)->internal->psn_send++;
+
+ /* Check for mandatory rekey */
+ if (sequence == SILC_CLIENT_REKEY_THRESHOLD)
+ silc_schedule_task_add(client->schedule, sock->sock,
+ silc_client_rekey_callback, sock, 0, 1,
+ SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
}
block_len = cipher ? silc_cipher_get_block_len(cipher) : 0;
/* Set the packet context pointers */
packetdata.flags = 0;
packetdata.type = type;
- if (sock->user_data &&
+ if (sock->user_data &&
((SilcClientConnection)sock->user_data)->local_id_data) {
packetdata.src_id = ((SilcClientConnection)sock->user_data)->local_id_data;
- packetdata.src_id_len =
+ packetdata.src_id_len =
silc_id_get_len(((SilcClientConnection)sock->user_data)->local_id,
SILC_ID_CLIENT);
- } else {
+ } else {
packetdata.src_id = silc_calloc(SILC_ID_CLIENT_LEN, sizeof(unsigned char));
packetdata.src_id_len = SILC_ID_CLIENT_LEN;
}
packetdata.dst_id_len = 0;
packetdata.dst_id_type = SILC_ID_NONE;
}
- packetdata.truelen = data_len + SILC_PACKET_HEADER_LEN +
+ data_len = SILC_PACKET_DATALEN(data_len, (SILC_PACKET_HEADER_LEN +
+ packetdata.src_id_len +
+ packetdata.dst_id_len));
+ packetdata.truelen = data_len + SILC_PACKET_HEADER_LEN +
packetdata.src_id_len + packetdata.dst_id_len;
- packetdata.padlen = SILC_PACKET_PADLEN(packetdata.truelen, block_len);
-
- /* Prepare outgoing data buffer for packet sending */
- silc_packet_send_prepare(sock,
- SILC_PACKET_HEADER_LEN +
- packetdata.src_id_len +
- packetdata.dst_id_len,
- packetdata.padlen,
- data_len);
-
- SILC_LOG_DEBUG(("Putting data to outgoing buffer, len %d", data_len));
-
- packetdata.buffer = sock->outbuf;
-
- /* Put the data to the buffer */
- if (data && data_len)
- silc_buffer_put(sock->outbuf, data, data_len);
+ if (type == SILC_PACKET_CONNECTION_AUTH)
+ SILC_PACKET_PADLEN_MAX(packetdata.truelen, block_len, packetdata.padlen);
+ else
+ SILC_PACKET_PADLEN(packetdata.truelen, block_len, packetdata.padlen);
/* Create the outgoing packet */
- silc_packet_assemble(&packetdata, cipher);
+ if (!silc_packet_assemble(&packetdata, client->rng, cipher, hmac, sock,
+ data, data_len, (const SilcBuffer)&packet)) {
+ SILC_LOG_ERROR(("Error assembling packet"));
+ return;
+ }
/* Encrypt the packet */
if (cipher)
- silc_packet_encrypt(cipher, hmac, sequence, sock->outbuf,
- sock->outbuf->len);
+ silc_packet_encrypt(cipher, hmac, sequence, (SilcBuffer)&packet,
+ packet.len);
- SILC_LOG_HEXDUMP(("Packet (%d), len %d", sequence, sock->outbuf->len),
- sock->outbuf->data, sock->outbuf->len);
+ SILC_LOG_HEXDUMP(("Packet (%d), len %d", sequence, packet.len),
+ packet.data, packet.len);
/* Now actually send the packet */
silc_client_packet_send_real(client, sock, force_send);
}
+/* Packet sending routine for application. This is the only routine that
+ is provided for application to send SILC packets. */
+
+bool silc_client_send_packet(SilcClient client,
+ SilcClientConnection conn,
+ SilcPacketType type,
+ const unsigned char *data,
+ SilcUInt32 data_len)
+{
+
+ assert(client);
+ if (!conn)
+ return FALSE;
+
+ silc_client_packet_send(client, conn->sock, type, NULL, 0, NULL, NULL,
+ (unsigned char *)data, data_len, TRUE);
+ return TRUE;
+}
+
void silc_client_packet_queue_purge(SilcClient client,
SilcSocketConnection sock)
{
- if (sock && SILC_IS_OUTBUF_PENDING(sock) &&
+ if (sock && SILC_IS_OUTBUF_PENDING(sock) &&
(SILC_IS_DISCONNECTED(sock) == FALSE)) {
- if (sock->outbuf->data - sock->outbuf->head)
- silc_buffer_push(sock->outbuf, sock->outbuf->data - sock->outbuf->head);
-
silc_packet_send(sock, TRUE);
-
- SILC_CLIENT_SET_CONNECTION_FOR_INPUT(client->schedule, sock->sock);
SILC_UNSET_OUTBUF_PENDING(sock);
+ SILC_CLIENT_SET_CONNECTION_FOR_INPUT(client->schedule, sock->sock);
silc_buffer_clear(sock->outbuf);
}
}
/* Closes connection to remote end. Free's all allocated data except
- for some information such as nickname etc. that are valid at all time.
+ for some information such as nickname etc. that are valid at all time.
If the `sock' is NULL then the conn->sock will be used. If `sock' is
provided it will be checked whether the sock and `conn->sock' are the
same (they can be different, ie. a socket can use `conn' as its
connection but `conn->sock' might be actually a different connection
than the `sock'). */
-void silc_client_close_connection(SilcClient client,
- SilcSocketConnection sock,
- SilcClientConnection conn)
+void silc_client_close_connection_real(SilcClient client,
+ SilcSocketConnection sock,
+ SilcClientConnection conn)
{
int del = FALSE;
SILC_LOG_DEBUG(("Start"));
+ if (!sock && !conn)
+ return;
+
if (!sock || (sock && conn->sock == sock))
del = TRUE;
if (!sock)
sock = conn->sock;
+ if (!sock) {
+ if (del && conn)
+ silc_client_del_connection(client, conn);
+ return;
+ }
+
/* We won't listen for this connection anymore */
silc_schedule_unset_listen_fd(client->schedule, sock->sock);
/* Unregister all tasks */
silc_schedule_task_del_by_fd(client->schedule, sock->sock);
- silc_schedule_task_del_by_fd(client->schedule, sock->sock);
/* Close the actual connection */
silc_net_close_connection(sock->sock);
/* Cancel any active protocol */
if (sock->protocol) {
- if (sock->protocol->protocol->type ==
+ if (sock->protocol->protocol->type ==
SILC_PROTOCOL_CLIENT_KEY_EXCHANGE ||
- sock->protocol->protocol->type ==
+ sock->protocol->protocol->type ==
SILC_PROTOCOL_CLIENT_CONNECTION_AUTH) {
sock->protocol->state = SILC_PROTOCOL_STATE_ERROR;
silc_protocol_execute_final(sock->protocol, client->schedule);
/* The application will recall this function with these protocols
- (the ops->connect client operation). */
+ (the ops->connected client operation). */
return;
} else {
sock->protocol->state = SILC_PROTOCOL_STATE_ERROR;
}
/* Free everything */
- if (del && sock->user_data) {
- /* Free all cache entries */
- SilcIDCacheList list;
- SilcIDCacheEntry entry;
- bool ret;
-
- if (silc_idcache_get_all(conn->client_cache, &list)) {
- ret = silc_idcache_list_first(list, &entry);
- while (ret) {
- silc_client_del_client(client, conn, entry->context);
- ret = silc_idcache_list_next(list, &entry);
- }
- silc_idcache_list_free(list);
- }
-
- if (silc_idcache_get_all(conn->channel_cache, &list)) {
- ret = silc_idcache_list_first(list, &entry);
- while (ret) {
- silc_client_del_channel(client, conn, entry->context);
- ret = silc_idcache_list_next(list, &entry);
- }
- silc_idcache_list_free(list);
- }
-
- if (silc_idcache_get_all(conn->server_cache, &list)) {
- ret = silc_idcache_list_first(list, &entry);
- while (ret) {
- silc_client_del_server(client, conn, entry->context);
- ret = silc_idcache_list_next(list, &entry);
- }
- silc_idcache_list_free(list);
- }
-
- /* Clear ID caches */
- if (conn->client_cache)
- silc_idcache_free(conn->client_cache);
- if (conn->channel_cache)
- silc_idcache_free(conn->channel_cache);
- if (conn->server_cache)
- silc_idcache_free(conn->server_cache);
-
- /* Free data (my ID is freed in above silc_client_del_client).
- conn->nickname is freed when freeing the local_entry->nickname. */
- if (conn->remote_host)
- silc_free(conn->remote_host);
- if (conn->local_id_data)
- silc_free(conn->local_id_data);
- if (conn->send_key)
- silc_cipher_free(conn->send_key);
- if (conn->receive_key)
- silc_cipher_free(conn->receive_key);
- if (conn->hmac_send)
- silc_hmac_free(conn->hmac_send);
- if (conn->hmac_receive)
- silc_hmac_free(conn->hmac_receive);
- if (conn->pending_commands)
- silc_dlist_uninit(conn->pending_commands);
- if (conn->rekey)
- silc_free(conn->rekey);
-
- if (conn->active_session) {
- sock->user_data = NULL;
- silc_client_ftp_session_free(conn->active_session);
- conn->active_session = NULL;
- }
-
- silc_client_ftp_free_sessions(client, conn);
-
- memset(conn, 0, sizeof(*conn));
+ if (del && sock->user_data)
silc_client_del_connection(client, conn);
- }
silc_socket_free(sock);
}
-/* Called when we receive disconnection packet from server. This
+/* Closes the connection to the remote end */
+
+void silc_client_close_connection(SilcClient client,
+ SilcClientConnection conn)
+{
+ silc_client_close_connection_real(client, NULL, conn);
+}
+
+/* Called when we receive disconnection packet from server. This
closes our end properly and displays the reason of the disconnection
on the screen. */
if (sock == NULL)
return;
- silc_client_close_connection(client, sock, sock->user_data);
+ silc_client_close_connection_real(client, sock, sock->user_data);
}
-/* Called when we receive disconnection packet from server. This
+/* Called when we receive disconnection packet from server. This
closes our end properly and displays the reason of the disconnection
on the screen. */
void silc_client_disconnected_by_server(SilcClient client,
SilcSocketConnection sock,
- SilcBuffer message)
+ SilcBuffer packet)
{
- char *msg;
+ SilcClientConnection conn;
+ SilcStatus status;
+ char *message = NULL;
SILC_LOG_DEBUG(("Server disconnected us, sock %d", sock->sock));
- msg = silc_memdup(message->data, message->len);
- client->internal->ops->say(client, sock->user_data,
- SILC_CLIENT_MESSAGE_AUDIT, msg);
- silc_free(msg);
+ if (packet->len < 1)
+ return;
+
+ status = (SilcStatus)packet->data[0];
+
+ if (packet->len > 1 &&
+ silc_utf8_valid(packet->data + 1, packet->len - 1))
+ message = silc_memdup(packet->data + 1, packet->len - 1);
+
+ conn = (SilcClientConnection)sock->user_data;
+ if (sock == conn->sock && sock->type != SILC_SOCKET_TYPE_CLIENT)
+ client->internal->ops->disconnected(client, conn, status, message);
+
+ silc_free(message);
SILC_SET_DISCONNECTED(sock);
/* Close connection through scheduler. */
- silc_schedule_task_add(client->schedule, sock->sock,
+ silc_schedule_task_add(client->schedule, sock->sock,
silc_client_disconnected_by_server_later,
- client, 0, 1, SILC_TASK_TIMEOUT,
+ client, 0, 1, SILC_TASK_TIMEOUT,
SILC_TASK_PRI_NORMAL);
}
-/* Received error message from server. Display it on the screen.
+/* Received error message from server. Display it on the screen.
We don't take any action what so ever of the error message. */
void silc_client_error_by_server(SilcClient client,
char *msg;
msg = silc_memdup(message->data, message->len);
- client->internal->ops->say(client, sock->user_data,
+ client->internal->ops->say(client, sock->user_data,
SILC_CLIENT_MESSAGE_AUDIT, msg);
silc_free(msg);
}
{
SilcClientConnection conn = (SilcClientConnection)context;
SilcClient client = conn->client;
+ if (client)
+ silc_client_command_send(client, conn, SILC_COMMAND_NICK,
+ ++conn->cmd_ident, 1, 1,
+ client->nickname, strlen(client->nickname));
+}
+
+/* Client session resuming callback. If the session was resumed
+ this callback is called after the resuming is completed. This
+ will call the `connect' client operation to the application
+ since it has not been called yet. */
- silc_client_command_send(client, conn, SILC_COMMAND_NICK,
- ++conn->cmd_ident, 1, 1,
- client->nickname, strlen(client->nickname));
+static void silc_client_resume_session_cb(SilcClient client,
+ SilcClientConnection conn,
+ bool success,
+ void *context)
+{
+ SilcBuffer sidp;
+
+ /* Notify application that connection is created to server */
+ client->internal->ops->connected(client, conn, success ?
+ SILC_CLIENT_CONN_SUCCESS_RESUME :
+ SILC_CLIENT_CONN_ERROR);
+
+ if (success) {
+ /* Issue INFO command to fetch the real server name and server
+ information and other stuff. */
+ silc_client_command_register(client, SILC_COMMAND_INFO, NULL, NULL,
+ silc_client_command_reply_info_i, 0,
+ ++conn->cmd_ident);
+ sidp = silc_id_payload_encode(conn->remote_id, SILC_ID_SERVER);
+ silc_client_command_send(client, conn, SILC_COMMAND_INFO,
+ conn->cmd_ident, 1, 2, sidp->data, sidp->len);
+ silc_buffer_free(sidp);
+ }
}
/* Processes the received new Client ID from server. Old Client ID is
SilcClientConnection conn = (SilcClientConnection)sock->user_data;
int connecting = FALSE;
SilcClientID *client_id = silc_id_payload_get_id(idp);
- SilcBuffer sidp;
if (!conn->local_entry)
connecting = TRUE;
return;
}
- silc_idcache_del_by_context(conn->client_cache, conn->local_entry);
+ silc_idcache_del_by_context(conn->internal->client_cache,
+ conn->local_entry);
silc_free(conn->local_id);
}
-
+
/* Save the new ID */
if (conn->local_id_data)
conn->local_entry->nickname = conn->nickname;
if (!conn->local_entry->username)
conn->local_entry->username = strdup(client->username);
- if (!conn->local_entry->hostname)
- conn->local_entry->hostname = strdup(client->hostname);
if (!conn->local_entry->server)
conn->local_entry->server = strdup(conn->remote_host);
conn->local_entry->id = conn->local_id;
conn->local_entry->valid = TRUE;
if (!conn->local_entry->channels)
- conn->local_entry->channels = silc_hash_table_alloc(1, silc_hash_ptr,
+ conn->local_entry->channels = silc_hash_table_alloc(1, silc_hash_ptr,
NULL, NULL,
- NULL, NULL, NULL,
+ NULL, NULL, NULL,
TRUE);
/* Put it to the ID cache */
- silc_idcache_add(conn->client_cache, strdup(conn->nickname), conn->local_id,
+ silc_idcache_add(conn->internal->client_cache,
+ strdup(conn->nickname), conn->local_id,
(void *)conn->local_entry, 0, NULL);
if (connecting) {
- /* Send NICK command if the nickname was set by the application (and is
- not same as the username). Send this with little timeout. */
- if (client->nickname && strcmp(client->nickname, client->username))
- silc_schedule_task_add(client->schedule, 0,
- silc_client_send_auto_nick, conn,
- 1, 0, SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
-
- /* Issue INFO command to fetch the real server name and server information
- and other stuff. */
- silc_client_command_register(client, SILC_COMMAND_INFO, NULL, NULL,
- silc_client_command_reply_info_i, 0,
+ SilcBuffer sidp;
+
+ /* Issue IDENTIFY command for itself to get resolved hostname
+ correctly from server. */
+ silc_client_command_register(client, SILC_COMMAND_IDENTIFY, NULL, NULL,
+ silc_client_command_reply_identify_i, 0,
++conn->cmd_ident);
- sidp = silc_id_payload_encode(conn->remote_id, SILC_ID_SERVER);
- silc_client_command_send(client, conn, SILC_COMMAND_INFO,
- conn->cmd_ident, 1, 2, sidp->data, sidp->len);
+ sidp = silc_id_payload_encode(conn->local_entry->id, SILC_ID_CLIENT);
+ silc_client_command_send(client, conn, SILC_COMMAND_IDENTIFY,
+ conn->cmd_ident, 1, 5, sidp->data, sidp->len);
silc_buffer_free(sidp);
- /* Notify application of successful connection. We do it here now that
- we've received the Client ID and are allowed to send traffic. */
- client->internal->ops->connect(client, conn, TRUE);
+ if (!conn->internal->params.detach_data) {
+ /* Send NICK command if the nickname was set by the application (and is
+ not same as the username). Send this with little timeout. */
+ if (client->nickname && strcmp(client->nickname, client->username))
+ silc_schedule_task_add(client->schedule, 0,
+ silc_client_send_auto_nick, conn,
+ 1, 0, SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
+
+ /* Notify application of successful connection. We do it here now that
+ we've received the Client ID and are allowed to send traffic. */
+ client->internal->ops->connected(client, conn, SILC_CLIENT_CONN_SUCCESS);
+
+ /* Issue INFO command to fetch the real server name and server
+ information and other stuff. */
+ silc_client_command_register(client, SILC_COMMAND_INFO, NULL, NULL,
+ silc_client_command_reply_info_i, 0,
+ ++conn->cmd_ident);
+ sidp = silc_id_payload_encode(conn->remote_id, SILC_ID_SERVER);
+ silc_client_command_send(client, conn, SILC_COMMAND_INFO,
+ conn->cmd_ident, 1, 2, sidp->data, sidp->len);
+ silc_buffer_free(sidp);
+ } else {
+ /* We are resuming session. Start resolving informations from the
+ server we need to set the client libary in the state before
+ detaching the session. The connect client operation is called
+ after this is successfully completed */
+ silc_client_resume_session(client, conn, silc_client_resume_session_cb,
+ NULL);
+ }
}
}
SilcChannelUser chu;
silc_hash_table_list(client_entry->channels, &htl);
- while (silc_hash_table_get(&htl, NULL, (void *)&chu)) {
+ while (silc_hash_table_get(&htl, NULL, (void **)&chu)) {
silc_hash_table_del(chu->client->channels, chu->channel);
silc_hash_table_del(chu->channel->user_list, chu->client);
silc_free(chu);
is replaced from ID cache with the new one. If the old ID entry is only
updated, then this fucntion needs not to be called. */
-void silc_client_replace_from_channels(SilcClient client,
+void silc_client_replace_from_channels(SilcClient client,
SilcClientConnection conn,
SilcClientEntry old,
SilcClientEntry new)
SilcChannelUser chu;
silc_hash_table_list(old->channels, &htl);
- while (silc_hash_table_get(&htl, NULL, (void *)&chu)) {
+ while (silc_hash_table_get(&htl, NULL, (void **)&chu)) {
/* Replace client entry */
silc_hash_table_del(chu->client->channels, chu->channel);
silc_hash_table_del(chu->channel->user_list, chu->client);
-
+
chu->client = new;
silc_hash_table_add(chu->channel->user_list, chu->client, chu);
silc_hash_table_add(chu->client->channels, chu->channel, chu);
/* A timeout callback for the re-key. We will be the initiator of the
re-key protocol. */
-SILC_TASK_CALLBACK(silc_client_rekey_callback)
+SILC_TASK_CALLBACK_GLOBAL(silc_client_rekey_callback)
{
SilcSocketConnection sock = (SilcSocketConnection)context;
SilcClientConnection conn = (SilcClientConnection)sock->user_data;
- SilcClient client = (SilcClient)conn->rekey->context;
+ SilcClient client = (SilcClient)conn->internal->rekey->context;
SilcProtocol protocol;
SilcClientRekeyInternalContext *proto_ctx;
SILC_LOG_DEBUG(("Start"));
+ /* If rekey protocol is active already wait for it to finish */
+ if (sock->protocol && sock->protocol->protocol &&
+ sock->protocol->protocol->type == SILC_PROTOCOL_CLIENT_REKEY)
+ return;
+
/* Allocate internal protocol context. This is sent as context
to the protocol. */
proto_ctx = silc_calloc(1, sizeof(*proto_ctx));
proto_ctx->client = (void *)client;
proto_ctx->sock = silc_socket_dup(sock);
proto_ctx->responder = FALSE;
- proto_ctx->pfs = conn->rekey->pfs;
-
+ proto_ctx->pfs = conn->internal->rekey->pfs;
+
/* Perform rekey protocol. Will call the final callback after the
protocol is over. */
- silc_protocol_alloc(SILC_PROTOCOL_CLIENT_REKEY,
+ silc_protocol_alloc(SILC_PROTOCOL_CLIENT_REKEY,
&protocol, proto_ctx, silc_client_rekey_final);
sock->protocol = protocol;
-
+
/* Run the protocol */
silc_protocol_execute(protocol, client->schedule, 0, 0);
-
- /* Re-register re-key timeout */
- silc_schedule_task_add(client->schedule, sock->sock,
- silc_client_rekey_callback,
- context, conn->rekey->timeout, 0,
- SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
}
/* The final callback for the REKEY protocol. This will actually take the
(SilcClientRekeyInternalContext *)protocol->context;
SilcClient client = (SilcClient)ctx->client;
SilcSocketConnection sock = ctx->sock;
+ SilcClientConnection conn = (SilcClientConnection)sock->user_data;
SILC_LOG_DEBUG(("Start"));
go to the network before we quit the protocol. */
silc_client_packet_queue_purge(client, sock);
+ /* Re-register re-key timeout */
+ if (ctx->responder == FALSE)
+ silc_schedule_task_add(client->schedule, sock->sock,
+ silc_client_rekey_callback,
+ sock, conn->internal->rekey->timeout, 0,
+ SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
+
/* Cleanup */
silc_protocol_free(protocol);
sock->protocol = NULL;
int ret;
/* If we haven't send our request then ignore this one. */
- if (!conn->connauth)
+ if (!conn->internal->connauth)
return;
/* Parse the payload */
if (ret == -1)
auth_meth = SILC_AUTH_NONE;
- /* Call the request callback to notify application for received
+ /* Call the request callback to notify application for received
authentication method information. */
- if (conn->connauth->callback)
- (*conn->connauth->callback)(client, conn, auth_meth,
- conn->connauth->context);
+ if (conn->internal->connauth->callback)
+ (*conn->internal->connauth->callback)(client, conn, auth_meth,
+ conn->internal->connauth->context);
- silc_schedule_task_del(client->schedule, conn->connauth->timeout);
+ silc_schedule_task_del(client->schedule, conn->internal->connauth->timeout);
- silc_free(conn->connauth);
- conn->connauth = NULL;
+ silc_free(conn->internal->connauth);
+ conn->internal->connauth = NULL;
}
-/* Timeout task callback called if the server does not reply to our
+/* Timeout task callback called if the server does not reply to our
connection authentication method request in the specified time interval. */
SILC_TASK_CALLBACK(silc_client_request_authentication_method_timeout)
SilcClientConnection conn = (SilcClientConnection)context;
SilcClient client = conn->client;
- if (!conn->connauth)
+ if (!conn->internal->connauth)
return;
/* Call the request callback to notify application */
- if (conn->connauth->callback)
- (*conn->connauth->callback)(client, conn, SILC_AUTH_NONE,
- conn->connauth->context);
+ if (conn->internal->connauth->callback)
+ (*conn->internal->connauth->callback)(client, conn, SILC_AUTH_NONE,
+ conn->internal->connauth->context);
- silc_free(conn->connauth);
- conn->connauth = NULL;
+ silc_free(conn->internal->connauth);
+ conn->internal->connauth = NULL;
}
/* This function can be used to request the current authentication method
The `callback' with `context' will be called after the server has
replied back with the current authentication method. */
-void
+void
silc_client_request_authentication_method(SilcClient client,
SilcClientConnection conn,
SilcConnectionAuthRequest callback,
SilcClientConnAuthRequest connauth;
SilcBuffer packet;
+ assert(client && conn);
connauth = silc_calloc(1, sizeof(*connauth));
connauth->callback = callback;
connauth->context = context;
- if (conn->connauth)
- silc_free(conn->connauth);
+ if (conn->internal->connauth)
+ silc_free(conn->internal->connauth);
- conn->connauth = connauth;
+ conn->internal->connauth = connauth;
/* Assemble the request packet and send it to the server */
packet = silc_buffer_alloc(4);
SILC_STR_UI_SHORT(SILC_SOCKET_TYPE_CLIENT),
SILC_STR_UI_SHORT(SILC_AUTH_NONE),
SILC_STR_END);
- silc_client_packet_send(client, conn->sock,
+ silc_client_packet_send(client, conn->sock,
SILC_PACKET_CONNECTION_AUTH_REQUEST,
- NULL, 0, NULL, NULL,
+ NULL, 0, NULL, NULL,
packet->data, packet->len, FALSE);
silc_buffer_free(packet);
/* Register a timeout in case server does not reply anything back. */
connauth->timeout =
- silc_schedule_task_add(client->schedule, conn->sock->sock,
+ silc_schedule_task_add(client->schedule, conn->sock->sock,
silc_client_request_authentication_method_timeout,
- conn,
+ conn,
client->internal->params->connauth_request_secs, 0,
SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
}
projects / silc.git / blobdiff