/*
- client.c
+ client.c
Author: Pekka Riikonen <priikone@silcnet.org>
- Copyright (C) 1997 - 2001 Pekka Riikonen
+ Copyright (C) 1997 - 2002 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
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
+ the Free Software Foundation; version 2 of the License.
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
*/
/* $Id$ */
-#include "clientlibincludes.h"
+#include "silcincludes.h"
+#include "silcclient.h"
#include "client_internal.h"
/* Static task callback prototypes */
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_packet_parse_real);
-SILC_TASK_CALLBACK(silc_client_rekey_callback);
SILC_TASK_CALLBACK(silc_client_rekey_final);
static bool silc_client_packet_parse(SilcPacketParserContext *parser_context,
void silc_client_resolve_auth_method(bool success,
SilcProtocolAuthMeth auth_meth,
const unsigned char *auth_data,
- uint32 auth_data_len, void *context);
+ SilcUInt32 auth_data_len, void *context);
/* Allocates new client object. This has to be done before client may
work. After calling this one must call silc_client_init to initialize
SilcClient silc_client_alloc(SilcClientOperations *ops,
SilcClientParams *params,
void *application,
- const char *silc_version)
+ const char *version_string)
{
SilcClient new_client;
new_client = silc_calloc(1, sizeof(*new_client));
new_client->application = application;
- new_client->ops = ops;
- new_client->silc_client_version = strdup(silc_version);
- new_client->params = silc_calloc(1, sizeof(*new_client->params));
+
+ new_client->internal = silc_calloc(1, sizeof(*new_client->internal));
+ new_client->internal->ops = ops;
+ new_client->internal->params =
+ silc_calloc(1, sizeof(*new_client->internal->params));
+ if (!version_string)
+ version_string = silc_version_string;
+ new_client->internal->silc_client_version = strdup(version_string);
if (params)
- memcpy(new_client->params, params, sizeof(*params));
+ memcpy(new_client->internal->params, params, sizeof(*params));
- if (!new_client->params->task_max)
- new_client->params->task_max = 200;
+ if (!new_client->internal->params->task_max)
+ new_client->internal->params->task_max = 200;
- if (!new_client->params->rekey_secs)
- new_client->params->rekey_secs = 3600;
+ if (!new_client->internal->params->rekey_secs)
+ new_client->internal->params->rekey_secs = 3600;
- if (!new_client->params->connauth_request_secs)
- new_client->params->connauth_request_secs = 2;
+ if (!new_client->internal->params->connauth_request_secs)
+ new_client->internal->params->connauth_request_secs = 2;
- new_client->params->
- nickname_format[sizeof(new_client->params->nickname_format) - 1] = 0;
+ new_client->internal->params->
+ nickname_format[sizeof(new_client->internal->
+ params->nickname_format) - 1] = 0;
return new_client;
}
if (client->rng)
silc_rng_free(client->rng);
- silc_free(client->silc_client_version);
- silc_free(client->params);
+ 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);
silc_free(client);
}
}
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->md5hash);
silc_hash_alloc("sha1", &client->sha1hash);
/* Initialize none cipher */
- silc_cipher_alloc("none", &client->none_cipher);
+ silc_cipher_alloc("none", &client->internal->none_cipher);
/* Initialize random number generator */
client->rng = silc_rng_alloc();
silc_client_protocols_register();
/* Initialize the scheduler */
- client->schedule = silc_schedule_init(client->params->task_max ?
- client->params->task_max : 200);
+ client->schedule =
+ silc_schedule_init(client->internal->params->task_max ?
+ client->internal->params->task_max : 200, client);
if (!client->schedule)
return FALSE;
+ /* Register commands */
+ silc_client_commands_register(client);
+
return TRUE;
}
silc_schedule_uninit(client->schedule);
silc_client_protocols_unregister();
+ silc_client_commands_unregister(client);
SILC_LOG_DEBUG(("Client stopped"));
}
{
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);
}
+/* Runs the client and returns immeadiately. This function is used when
+ the SILC Client object indicated by the `client' is run under some
+ other scheduler, or event loop or main loop. On GUI applications,
+ for example this may be desired to use to run the client under the
+ GUI application's main loop. Typically the GUI application would
+ register an idle task that calls this function multiple times in
+ a second to quickly process the SILC specific data. */
+
+void silc_client_run_one(SilcClient client)
+{
+ /* Run the scheduler once. */
+ silc_schedule_one(client->schedule, 0);
+}
+
static void silc_client_entry_destructor(SilcIDCache cache,
SilcIDCacheEntry entry)
{
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->conns_count; i++)
- if (client->conns && !client->conns[i]) {
- client->conns[i] = conn;
+ for (i = 0; i < client->internal->conns_count; i++)
+ if (client->internal->conns && !client->internal->conns[i]) {
+ client->internal->conns[i] = conn;
return conn;
}
- client->conns = silc_realloc(client->conns, sizeof(*client->conns)
- * (client->conns_count + 1));
- client->conns[client->conns_count] = conn;
- client->conns_count++;
+ 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;
+ client->internal->conns_count++;
return conn;
}
{
int i;
- for (i = 0; i < client->conns_count; i++)
- if (client->conns[i] == 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);
+ }
- 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);
+ /* 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);
+
+ /* 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) {
+ 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->conns[i] = NULL;
+ client->internal->conns[i] = NULL;
}
}
{
int i;
- if (!client->sockets) {
- client->sockets = silc_calloc(1, sizeof(*client->sockets));
- client->sockets[0] = silc_socket_dup(sock);
- client->sockets_count = 1;
+ if (!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;
return;
}
- for (i = 0; i < client->sockets_count; i++) {
- if (client->sockets[i] == NULL) {
- client->sockets[i] = silc_socket_dup(sock);
+ for (i = 0; i < client->internal->sockets_count; i++) {
+ if (client->internal->sockets[i] == NULL) {
+ client->internal->sockets[i] = silc_socket_dup(sock);
return;
}
}
- client->sockets = silc_realloc(client->sockets, sizeof(*client->sockets) *
- (client->sockets_count + 1));
- client->sockets[client->sockets_count] = silc_socket_dup(sock);
- client->sockets_count++;
+ client->internal->sockets =
+ silc_realloc(client->internal->sockets,
+ sizeof(*client->internal->sockets) *
+ (client->internal->sockets_count + 1));
+ client->internal->sockets[client->internal->sockets_count] =
+ silc_socket_dup(sock);
+ client->internal->sockets_count++;
}
/* Deletes listener socket from the listener sockets table. */
{
int i;
- if (!client->sockets)
+ if (!client->internal->sockets)
return;
- for (i = 0; i < client->sockets_count; i++) {
- if (client->sockets[i] == sock) {
+ for (i = 0; i < client->internal->sockets_count; i++) {
+ if (client->internal->sockets[i] == sock) {
silc_socket_free(sock);
- client->sockets[i] = NULL;
+ client->internal->sockets[i] = NULL;
return;
}
}
(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;
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)
+bool 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->ops->say(client, conn, SILC_CLIENT_MESSAGE_AUDIT,
- "Connecting to port %d of server %s", port, host);
+ 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
needed as we are doing async connecting. */
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 */
return sock;
}
-/* Start SILC Key Exchange (SKE) protocol to negotiate shared secret
- key material between client and server. This function can be called
- directly if application is performing its own connecting and does not
- use the connecting provided by this library. This function is normally
- used only if the application performed the connecting outside the library.
- The library however may use this internally. */
+/* Socket hostname and IP lookup callback that is called before actually
+ starting the key exchange. The lookup is called from the function
+ silc_client_start_key_exchange. */
-bool silc_client_start_key_exchange(SilcClient client,
- SilcClientConnection conn,
- int fd)
+static void silc_client_start_key_exchange_cb(SilcSocketConnection sock,
+ void *context)
{
+ SilcClientConnection conn = (SilcClientConnection)context;
+ SilcClient client = conn->client;
SilcProtocol protocol;
SilcClientKEInternalContext *proto_ctx;
- void *context;
- /* 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.
- 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);
+ SILC_LOG_DEBUG(("Start"));
- conn->nickname = strdup(client->username);
- conn->sock->hostname = conn->remote_host;
- conn->sock->ip = 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->sock->hostname);
conn->sock->port = conn->remote_port;
/* Allocate internal Key Exchange context. This is sent to the
&protocol, (void *)proto_ctx,
silc_client_connect_to_server_second);
if (!protocol) {
- client->ops->say(client, conn, SILC_CLIENT_MESSAGE_ERROR,
- "Error: Could not start key exchange protocol");
- return FALSE;
+ 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->connected(client, conn, SILC_CLIENT_CONN_ERROR);
+ return;
}
conn->sock->protocol = protocol;
be set separately by calling SILC_CLIENT_SET_CONNECTION_FOR_OUTPUT,
later when outgoing data is available. */
context = (void *)client;
- SILC_CLIENT_REGISTER_CONNECTION_FOR_IO(fd);
+ SILC_CLIENT_REGISTER_CONNECTION_FOR_IO(conn->sock->sock);
/* Execute the protocol */
silc_protocol_execute(protocol, client->schedule, 0, 0);
- return TRUE;
+}
+
+/* Start SILC Key Exchange (SKE) protocol to negotiate shared secret
+ key material between client and server. This function can be called
+ directly if application is performing its own connecting and does not
+ use the connecting provided by this library. This function is normally
+ used only if the application performed the connecting outside the library.
+ The library however may use this internally. */
+
+void silc_client_start_key_exchange(SilcClient 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.
+ 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->nickname = (client->nickname ? strdup(client->nickname) :
+ strdup(client->username));
+
+ /* Resolve the remote hostname and IP address for our socket connection */
+ silc_socket_host_lookup(conn->sock, FALSE, silc_client_start_key_exchange_cb,
+ conn, client->schedule);
+}
+
+/* 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 *)context;
+ SilcClient client = (SilcClient)ctx->client;
+
+ 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
if (opt != 0) {
if (ctx->tries < 2) {
/* Connection failed but lets try again */
- client->ops->say(client, conn, SILC_CLIENT_MESSAGE_ERROR,
- "Could not connect to server %s: %s",
- ctx->host, strerror(opt));
- client->ops->say(client, conn, SILC_CLIENT_MESSAGE_AUDIT,
- "Connecting to port %d of server %s resumed",
- ctx->port, ctx->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",
+ ctx->port, ctx->host);
/* Unregister old connection try */
silc_schedule_unset_listen_fd(client->schedule, fd);
ctx->tries++;
} else {
/* Connection failed and we won't try anymore */
- client->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_ERROR,
+ "Could not connect to server %s: %s",
+ ctx->host, strerror(opt));
silc_schedule_unset_listen_fd(client->schedule, fd);
silc_net_close_connection(fd);
silc_schedule_task_del(client->schedule, ctx->task);
silc_free(ctx);
/* Notify application of failure */
- client->ops->connect(client, conn, FALSE);
+ client->internal->ops->connected(client, conn, SILC_CLIENT_CONN_ERROR);
silc_client_del_connection(client, conn);
}
return;
silc_schedule_task_del(client->schedule, ctx->task);
silc_free(ctx);
- if (!silc_client_start_key_exchange(client, conn, fd)) {
- silc_net_close_connection(fd);
- client->ops->connect(client, conn, FALSE);
- }
+ silc_client_start_key_exchange(client, conn, fd);
}
/* Second part of the connecting to the server. This executed
silc_socket_free(ctx->sock);
/* Notify application of failure */
- client->ops->connect(client, ctx->sock->user_data, FALSE);
- silc_free(ctx);
+ silc_schedule_task_add(client->schedule, ctx->sock->sock,
+ silc_client_connect_failure, ctx,
+ 0, 1, SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
return;
}
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->ops->get_auth_method(client, sock->user_data, sock->hostname,
- sock->port, silc_client_resolve_auth_method,
- proto_ctx);
+ client->internal->ops->get_auth_method(client, sock->user_data,
+ sock->hostname,
+ sock->port,
+ silc_client_resolve_auth_method,
+ proto_ctx);
}
/* Authentication method resolving callback. Application calls this function
- after we've called the client->ops->get_auth_method client operation
- to resolve the authentication method. We will continue the executiong
- of the protocol in this function. */
+ 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. */
void silc_client_resolve_auth_method(bool success,
SilcProtocolAuthMeth auth_meth,
const unsigned char *auth_data,
- uint32 auth_data_len, void *context)
+ SilcUInt32 auth_data_len, void *context)
{
SilcClientConnAuthInternalContext *proto_ctx =
(SilcClientConnAuthInternalContext *)context;
proto_ctx->auth_meth = auth_meth;
- if (auth_data && auth_data_len) {
- proto_ctx->auth_data = silc_calloc(auth_data_len, sizeof(*auth_data));
- memcpy(proto_ctx->auth_data, 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;
}
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 */
- client->ops->connect(client, ctx->sock->user_data, FALSE);
- silc_free(ctx);
- 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->params->rekey_secs;
- conn->rekey->context = (void *)client;
+ 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
is used directly only in special cases. Normal cases should use
silc_server_packet_send. Returns < 0 on error. */
-int silc_client_packet_send_real(SilcClient client,
+bool silc_client_packet_send_real(SilcClient client,
SilcSocketConnection sock,
bool force_send)
{
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
close the connection */
if (SILC_IS_DISCONNECTING(sock)) {
if (sock == conn->sock && sock->type != SILC_SOCKET_TYPE_CLIENT)
- client->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->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,
}
}
-/* Parses whole packet, received earlier. */
-
-SILC_TASK_CALLBACK(silc_client_packet_parse_real)
-{
- SilcPacketParserContext *parse_ctx = (SilcPacketParserContext *)context;
- SilcClient client = (SilcClient)parse_ctx->context;
- SilcPacketContext *packet = parse_ctx->packet;
- SilcSocketConnection sock = parse_ctx->sock;
- SilcClientConnection conn = (SilcClientConnection)sock->user_data;
- int ret;
-
- SILC_LOG_DEBUG(("Start"));
-
- /* Parse the packet */
- if (parse_ctx->normal)
- ret = silc_packet_parse(packet, conn->receive_key);
- else
- ret = silc_packet_parse_special(packet, conn->receive_key);
-
- if (ret == SILC_PACKET_NONE)
- goto out;
-
- /* Parse the incoming packet type */
- silc_client_packet_parse_type(client, sock, packet);
-
- out:
- /* silc_buffer_clear(sock->inbuf); */
- silc_packet_context_free(packet);
- silc_free(parse_ctx);
-}
-
/* Parser callback called by silc_packet_receive_process. Thie merely
registers timeout that will handle the actual parsing when appropriate. */
SilcClient client = (SilcClient)context;
SilcSocketConnection sock = parser_context->sock;
SilcClientConnection conn = (SilcClientConnection)sock->user_data;
+ SilcPacketContext *packet = parser_context->packet;
+ SilcPacketType ret;
+
+ if (conn && conn->internal->hmac_receive && conn->sock == sock)
+ conn->internal->psn_receive = parser_context->packet->sequence + 1;
- if (conn && conn->hmac_receive)
- conn->psn_receive = parser_context->packet->sequence + 1;
+ /* Parse the packet immediately */
+ if (parser_context->normal)
+ ret = silc_packet_parse(packet, conn->internal->receive_key);
+ else
+ 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 (sock->protocol && sock->protocol->protocol &&
- (sock->protocol->protocol->type == SILC_PROTOCOL_CLIENT_KEY_EXCHANGE ||
- sock->protocol->protocol->type == SILC_PROTOCOL_CLIENT_REKEY)) {
- silc_client_packet_parse_real(client->schedule, 0, sock->sock,
- parser_context);
+ 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))) {
+
+ /* Parse the incoming packet type */
+ silc_client_packet_parse_type(client, sock, packet);
+ silc_packet_context_free(packet);
+ silc_free(parser_context);
/* Reprocess the buffer since we'll return FALSE. This is because
- the `conn->receive_key' might have become valid bu 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_client_packet_parse, client);
+
return FALSE;
}
- /* Parse the packet */
- silc_schedule_task_add(client->schedule, sock->sock,
- silc_client_packet_parse_real,
- (void *)parser_context, 0, 1,
- SILC_TASK_TIMEOUT,
- SILC_TASK_PRI_NORMAL);
-
+ /* Parse the incoming packet type */
+ silc_client_packet_parse_type(client, sock, packet);
+ silc_packet_context_free(packet);
+ silc_free(parser_context);
return TRUE;
}
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
*/
silc_client_process_failure(client, sock, packet);
break;
+
case SILC_PACKET_REJECT:
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
"protocol active, packet dropped."));
}
break;
+
case SILC_PACKET_KEY_EXCHANGE_2:
if (sock->protocol && sock->protocol->protocol &&
(sock->protocol->protocol->type == SILC_PROTOCOL_CLIENT_KEY_EXCHANGE ||
if (proto_ctx->packet)
silc_packet_context_free(proto_ctx->packet);
-
+ if (proto_ctx->dest_id)
+ silc_free(proto_ctx->dest_id);
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,
*/
SilcIDPayload idp;
- idp = silc_id_payload_parse(buffer);
+ idp = silc_id_payload_parse(buffer->data, buffer->len);
if (!idp)
break;
if (silc_id_payload_get_type(idp) != SILC_ID_CLIENT)
SilcCipher cipher,
SilcHmac hmac,
unsigned char *data,
- uint32 data_len,
- int force_send)
+ SilcUInt32 data_len,
+ bool force_send)
{
SilcPacketContext packetdata;
+ const SilcBufferStruct packet;
int block_len;
- uint32 sequence = 0;
+ SilcUInt32 sequence = 0;
if (!sock)
return;
/* 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;
packetdata.dst_id_len = 0;
packetdata.dst_id_type = SILC_ID_NONE;
}
+ 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) &&
(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_buffer_clear(sock->outbuf);
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)
/* 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);
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 (del && sock->user_data)
+ silc_client_del_connection(client, conn);
- 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);
- }
+ silc_socket_free(sock);
+}
- 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);
- }
+/* Closes the connection to the remote end */
- /* Clear ID caches */
- if (conn->client_cache)
- silc_idcache_del_all(conn->client_cache);
- if (conn->channel_cache)
- silc_idcache_del_all(conn->channel_cache);
- if (conn->server_cache)
- silc_idcache_del_all(conn->server_cache);
+void silc_client_close_connection(SilcClient client,
+ SilcClientConnection conn)
+{
+ silc_client_close_connection_real(client, NULL, conn);
+}
- /* Free data (my ID is freed in above silc_client_del_client) */
- 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;
- }
+/* Called when we receive disconnection packet from server. This
+ closes our end properly and displays the reason of the disconnection
+ on the screen. */
- silc_client_ftp_free_sessions(client, conn);
+SILC_TASK_CALLBACK(silc_client_disconnected_by_server_later)
+{
+ SilcClient client = (SilcClient)context;
+ SilcSocketConnection sock;
- memset(conn, 0, sizeof(*conn));
- silc_client_del_connection(client, conn);
- }
+ SILC_CLIENT_GET_SOCK(client, fd, sock);
+ if (sock == NULL)
+ return;
- silc_socket_free(sock);
+ silc_client_close_connection_real(client, sock, sock->user_data);
}
/* Called when we receive disconnection packet from server. This
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_calloc(message->len + 1, sizeof(char));
- memcpy(msg, message->data, message->len);
- client->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);
- silc_client_close_connection(client, sock, sock->user_data);
+
+ /* Close connection through scheduler. */
+ silc_schedule_task_add(client->schedule, sock->sock,
+ silc_client_disconnected_by_server_later,
+ client, 0, 1, SILC_TASK_TIMEOUT,
+ SILC_TASK_PRI_NORMAL);
}
/* Received error message from server. Display it on the screen.
{
char *msg;
- msg = silc_calloc(message->len + 1, sizeof(char));
- memcpy(msg, message->data, message->len);
- client->ops->say(client, sock->user_data, SILC_CLIENT_MESSAGE_AUDIT, msg);
+ msg = silc_memdup(message->data, message->len);
+ client->internal->ops->say(client, sock->user_data,
+ SILC_CLIENT_MESSAGE_AUDIT, msg);
silc_free(msg);
}
+/* Auto-nicking callback to send NICK command to server. */
+
+SILC_TASK_CALLBACK(silc_client_send_auto_nick)
+{
+ 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. */
+
+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
deleted from cache and new one is added. */
{
SilcClientConnection conn = (SilcClientConnection)sock->user_data;
int connecting = FALSE;
- SilcBuffer sidp;
+ SilcClientID *client_id = silc_id_payload_get_id(idp);
if (!conn->local_entry)
connecting = TRUE;
/* Delete old ID from ID cache */
if (conn->local_id) {
- silc_idcache_del_by_context(conn->client_cache, conn->local_entry);
+ /* Check whether they are different */
+ if (SILC_ID_CLIENT_COMPARE(conn->local_id, client_id)) {
+ silc_free(client_id);
+ return;
+ }
+
+ silc_idcache_del_by_context(conn->internal->client_cache,
+ conn->local_entry);
silc_free(conn->local_id);
}
if (conn->local_id_data)
silc_free(conn->local_id_data);
- conn->local_id = silc_id_payload_get_id(idp);
+ conn->local_id = client_id;
conn->local_id_data = silc_id_payload_get_data(idp);
conn->local_id_data_len = silc_id_payload_get_len(idp);;
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);
- conn->local_entry->server = strdup(conn->remote_host);
+ 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;
-
- /* Put it to the ID cache */
- silc_idcache_add(conn->client_cache, strdup(conn->nickname), conn->local_id,
- (void *)conn->local_entry, FALSE);
-
- /* Issue INFO command to fetch the real server name and server information
- and other stuff. */
- sidp = silc_id_payload_encode(conn->remote_id, SILC_ID_SERVER);
- silc_client_send_command(client, conn, SILC_COMMAND_INFO,
- ++conn->cmd_ident, 1, 2, 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. */
- if (connecting)
- client->ops->connect(client, conn, TRUE);
-}
-
-/* Processed received Channel ID for a channel. This is called when client
- joins to channel and server replies with channel ID. The ID is cached.
- Returns the created channel entry. This is also called when received
- channel ID in for example USERS command reply that we do not have. */
-
-SilcChannelEntry silc_client_new_channel_id(SilcClient client,
- SilcSocketConnection sock,
- char *channel_name,
- uint32 mode,
- SilcIDPayload idp)
-{
- SilcClientConnection conn = (SilcClientConnection)sock->user_data;
- SilcChannelEntry channel;
-
- SILC_LOG_DEBUG(("New channel ID"));
-
- channel = silc_calloc(1, sizeof(*channel));
- channel->channel_name = channel_name;
- channel->id = silc_id_payload_get_id(idp);
- channel->mode = mode;
- silc_list_init(channel->clients, struct SilcChannelUserStruct, next);
+ if (!conn->local_entry->channels)
+ conn->local_entry->channels = silc_hash_table_alloc(1, silc_hash_ptr,
+ NULL, NULL,
+ NULL, NULL, NULL,
+ TRUE);
/* Put it to the ID cache */
- silc_idcache_add(conn->channel_cache, channel->channel_name,
- (void *)channel->id, (void *)channel, FALSE);
-
- return channel;
+ silc_idcache_add(conn->internal->client_cache,
+ strdup(conn->nickname), conn->local_id,
+ (void *)conn->local_entry, 0, NULL);
+
+ if (connecting) {
+ 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->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);
+
+ 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);
+ }
+ }
}
-/* Removes a client entry from all channel it has joined. This really is
- a performance killer (client_entry should have pointers to channel
- entry list). */
+/* Removes a client entry from all channels it has joined. */
void silc_client_remove_from_channels(SilcClient client,
SilcClientConnection conn,
SilcClientEntry client_entry)
{
- SilcIDCacheEntry id_cache;
- SilcIDCacheList list;
- SilcChannelEntry channel;
+ SilcHashTableList htl;
SilcChannelUser chu;
- if (!silc_idcache_get_all(conn->channel_cache, &list))
- return;
-
- silc_idcache_list_first(list, &id_cache);
- channel = (SilcChannelEntry)id_cache->context;
-
- while (channel) {
-
- /* Remove client from channel */
- silc_list_start(channel->clients);
- while ((chu = silc_list_get(channel->clients)) != SILC_LIST_END) {
- if (chu->client == client_entry) {
- silc_list_del(channel->clients, chu);
- silc_free(chu);
- break;
- }
- }
-
- if (!silc_idcache_list_next(list, &id_cache))
- break;
-
- channel = (SilcChannelEntry)id_cache->context;
+ silc_hash_table_list(client_entry->channels, &htl);
+ 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);
}
- silc_idcache_list_free(list);
+ silc_hash_table_list_reset(&htl);
}
/* Replaces `old' client entries from all channels to `new' client entry.
SilcClientEntry old,
SilcClientEntry new)
{
- SilcIDCacheEntry id_cache;
- SilcIDCacheList list;
- SilcChannelEntry channel;
+ SilcHashTableList htl;
SilcChannelUser chu;
- if (!silc_idcache_get_all(conn->channel_cache, &list))
- return;
-
- silc_idcache_list_first(list, &id_cache);
- channel = (SilcChannelEntry)id_cache->context;
-
- while (channel) {
-
+ silc_hash_table_list(old->channels, &htl);
+ while (silc_hash_table_get(&htl, NULL, (void **)&chu)) {
/* Replace client entry */
- silc_list_start(channel->clients);
- while ((chu = silc_list_get(channel->clients)) != SILC_LIST_END) {
- if (chu->client == old) {
- chu->client = new;
- break;
- }
- }
-
- if (!silc_idcache_list_next(list, &id_cache))
- break;
+ silc_hash_table_del(chu->client->channels, chu->channel);
+ silc_hash_table_del(chu->channel->user_list, chu->client);
- channel = (SilcChannelEntry)id_cache->context;
+ chu->client = new;
+ silc_hash_table_add(chu->channel->user_list, chu->client, chu);
+ silc_hash_table_add(chu->client->channels, chu->channel, chu);
}
-
- silc_idcache_list_free(list);
+ silc_hash_table_list_reset(&htl);
}
/* Registers failure timeout to process the received failure packet
SilcSocketConnection sock,
SilcPacketContext *packet)
{
- uint32 failure = 0;
+ SilcUInt32 failure = 0;
if (sock->protocol) {
if (packet->buffer->len >= 4)
SILC_GET32_MSB(failure, packet->buffer->data);
/* Notify application */
- client->ops->failure(client, sock->user_data, sock->protocol,
- (void *)failure);
+ client->internal->ops->failure(client, sock->user_data, sock->protocol,
+ (void *)failure);
}
}
/* 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;
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. */
/* Re-register re-key timeout */
silc_schedule_task_add(client->schedule, sock->sock,
silc_client_rekey_callback,
- context, conn->rekey->timeout, 0,
+ context, conn->internal->rekey->timeout, 0,
SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
}
SilcPacketContext *packet)
{
SilcClientConnection conn = (SilcClientConnection)sock->user_data;
- uint16 conn_type, auth_meth;
+ SilcUInt16 conn_type, auth_meth;
int ret;
/* If we haven't send our request then ignore this one. */
- if (!conn->connauth)
+ if (!conn->internal->connauth)
return;
/* Parse the payload */
/* 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
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
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);
connauth->timeout =
silc_schedule_task_add(client->schedule, conn->sock->sock,
silc_client_request_authentication_method_timeout,
- conn, client->params->connauth_request_secs, 0,
+ conn,
+ client->internal->params->connauth_request_secs, 0,
SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
}
projects / silc.git / blobdiff