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 void silc_client_packet_parse(SilcPacketParserContext *parser_context);
+static bool silc_client_packet_parse(SilcPacketParserContext *parser_context,
+ void *context);
static void silc_client_packet_parse_type(SilcClient client,
SilcSocketConnection sock,
SilcPacketContext *packet);
conn->remote_port = port;
conn->context = context;
conn->pending_commands = silc_dlist_init();
+ conn->ftp_sessions = silc_dlist_init();
/* Add the connection to connections table */
for (i = 0; i < client->conns_count; i++)
for (i = 0; i < client->conns_count; i++)
if (client->conns[i] == conn) {
+
+ 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);
+ silc_free(conn->remote_host);
+ silc_dlist_uninit(conn->ftp_sessions);
silc_free(conn);
+
client->conns[i] = NULL;
}
}
ctx->ske->prop->pkcs,
ctx->ske->prop->hash,
ctx->ske->prop->hmac,
- ctx->ske->prop->group);
+ ctx->ske->prop->group,
+ ctx->responder);
silc_ske_free_key_material(ctx->keymat);
/* Allocate internal context for the authentication protocol. This
/* If connection is disconnecting already we will finally
close the connection */
if (SILC_IS_DISCONNECTING(sock)) {
- if (sock == conn->sock)
+ if (sock == conn->sock && sock->type != SILC_SOCKET_TYPE_CLIENT)
client->ops->disconnect(client, conn);
silc_client_close_connection(client, sock, conn);
return;
}
SILC_LOG_DEBUG(("EOF from connection %d", sock->sock));
- if (sock == conn->sock)
+ if (sock == conn->sock && sock->type != SILC_SOCKET_TYPE_CLIENT)
client->ops->disconnect(client, conn);
silc_client_close_connection(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, conn->receive_key, conn->hmac_receive,
+ silc_packet_receive_process(sock, FALSE, conn->receive_key,
+ conn->hmac_receive, conn->psn_receive,
silc_client_packet_parse, client);
else
- silc_packet_receive_process(sock, NULL, NULL,
+ silc_packet_receive_process(sock, FALSE, NULL, NULL, 0,
silc_client_packet_parse, client);
}
}
-/* Callback function that the silc_packet_decrypt will call to make the
- decision whether the packet is normal or special packet. We will
- return TRUE if it is normal and FALSE if it is special */
-
-static int silc_client_packet_decrypt_check(SilcPacketType packet_type,
- SilcBuffer buffer,
- SilcPacketContext *packet,
- void *context)
-{
-
- /* Packet is normal packet, if:
-
- 1) packet is private message packet and does not have private key set
- 2) is other packet than channel message packet
-
- all other packets are special packets
- */
-
- if (packet_type == SILC_PACKET_PRIVATE_MESSAGE &&
- (buffer->data[2] & SILC_PACKET_FLAG_PRIVMSG_KEY))
- return FALSE;
-
- if (packet_type != SILC_PACKET_CHANNEL_MESSAGE)
- return TRUE;
-
- return FALSE;
-}
-
-/* Parses whole packet, received earlier. */
+/* Parser callback called by silc_packet_receive_process. Thie merely
+ registers timeout that will handle the actual parsing when appropriate. */
-SILC_TASK_CALLBACK(silc_client_packet_parse_real)
+static bool silc_client_packet_parse(SilcPacketParserContext *parser_context,
+ void *context)
{
- SilcPacketParserContext *parse_ctx = (SilcPacketParserContext *)context;
- SilcClient client = (SilcClient)parse_ctx->context;
- SilcPacketContext *packet = parse_ctx->packet;
- SilcBuffer buffer = packet->buffer;
- SilcSocketConnection sock = parse_ctx->sock;
+ SilcClient client = (SilcClient)context;
+ SilcSocketConnection sock = parser_context->sock;
SilcClientConnection conn = (SilcClientConnection)sock->user_data;
- int ret;
+ SilcPacketContext *packet = parser_context->packet;
+ SilcPacketType ret;
- SILC_LOG_DEBUG(("Start"));
+ if (conn && conn->hmac_receive && conn->sock == sock)
+ conn->psn_receive = parser_context->packet->sequence + 1;
- /* Decrypt the received packet */
- if (sock->type != SILC_SOCKET_TYPE_UNKNOWN)
- ret = silc_packet_decrypt(conn->receive_key, conn->hmac_receive,
- buffer, packet,
- silc_client_packet_decrypt_check, parse_ctx);
+ /* Parse the packet immediately */
+ if (parser_context->normal)
+ ret = silc_packet_parse(packet, conn->receive_key);
else
- ret = silc_packet_decrypt(NULL, NULL, buffer, packet,
- silc_client_packet_decrypt_check, parse_ctx);
-
- if (ret < 0)
- goto out;
+ ret = silc_packet_parse_special(packet, conn->receive_key);
- if (ret == 0) {
- /* Parse the packet. Packet type is returned. */
- ret = silc_packet_parse(packet);
- } else {
- /* Parse the packet header in special way as this is "special"
- packet type. */
- ret = silc_packet_parse_special(packet);
+ 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))) {
+
+ /* 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 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_client_packet_parse, client);
+ else
+ silc_packet_receive_process(sock, FALSE, NULL, NULL, 0,
+ silc_client_packet_parse, client);
+
+ return FALSE;
}
-
- 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. */
-
-void silc_client_packet_parse(SilcPacketParserContext *parser_context)
-{
- SilcClient client = (SilcClient)parser_context->context;
-
- /* Parse the packet */
- silc_schedule_task_add(client->schedule, parser_context->sock->sock,
- silc_client_packet_parse_real,
- (void *)parser_context, 0, 1,
- SILC_TASK_TIMEOUT,
- SILC_TASK_PRI_NORMAL);
+ silc_free(parser_context);
+ return TRUE;
}
/* Parses the packet type and calls what ever routines the packet type
int force_send)
{
SilcPacketContext packetdata;
+ int block_len;
+ uint32 sequence = 0;
if (!sock)
return;
dst_id = ((SilcClientConnection)sock->user_data)->remote_id;
dst_id_type = SILC_ID_SERVER;
}
+
+ if (hmac)
+ sequence = ((SilcClientConnection)sock->user_data)->psn_send++;
}
+ block_len = cipher ? silc_cipher_get_block_len(cipher) : 0;
+
/* Set the packet context pointers */
packetdata.flags = 0;
packetdata.type = type;
}
packetdata.truelen = data_len + SILC_PACKET_HEADER_LEN +
packetdata.src_id_len + packetdata.dst_id_len;
- packetdata.padlen = SILC_PACKET_PADLEN(packetdata.truelen);
+ packetdata.padlen = SILC_PACKET_PADLEN(packetdata.truelen, block_len);
/* Prepare outgoing data buffer for packet sending */
silc_packet_send_prepare(sock,
silc_buffer_put(sock->outbuf, data, data_len);
/* Create the outgoing packet */
- silc_packet_assemble(&packetdata);
+ silc_packet_assemble(&packetdata, cipher);
/* Encrypt the packet */
if (cipher)
- silc_packet_encrypt(cipher, hmac, sock->outbuf, sock->outbuf->len);
+ silc_packet_encrypt(cipher, hmac, sequence, sock->outbuf,
+ sock->outbuf->len);
- SILC_LOG_HEXDUMP(("Packet, len %d", sock->outbuf->len),
+ SILC_LOG_HEXDUMP(("Packet (%d), len %d", sequence, sock->outbuf->len),
sock->outbuf->data, sock->outbuf->len);
/* Now actually send the packet */
{
int del = FALSE;
+ SILC_LOG_DEBUG(("Start"));
+
if (!sock || (sock && conn->sock == sock))
del = TRUE;
if (!sock)
silc_cipher_free(conn->send_key);
if (conn->receive_key)
silc_cipher_free(conn->receive_key);
- if (conn->hmac_send) /* conn->hmac_receive is same */
+ 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));
silc_client_del_connection(client, conn);
}
silc_socket_free(sock);
}
+/* Called when we receive disconnection packet from server. This
+ closes our end properly and displays the reason of the disconnection
+ on the screen. */
+
+SILC_TASK_CALLBACK(silc_client_disconnected_by_server_later)
+{
+ SilcClient client = (SilcClient)context;
+ SilcSocketConnection sock;
+
+ SILC_CLIENT_GET_SOCK(client, fd, sock);
+ if (sock == NULL)
+ return;
+
+ silc_client_close_connection(client, sock, sock->user_data);
+}
+
/* Called when we receive disconnection packet from server. This
closes our end properly and displays the reason of the disconnection
on the screen. */
silc_free(msg);
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.
conn, client->params->connauth_request_secs, 0,
SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
}
-
-/* Called when file transfer packet is received. This will parse the
- packet and give it to the file transfer protocol. */
-
-void silc_client_ftp(SilcClient client,
- SilcSocketConnection sock,
- SilcPacketContext *packet)
-{
- SilcClientConnection conn = (SilcClientConnection)sock->user_data;
- uint8 type;
- int ret;
-
- /* Parse the payload */
- ret = silc_buffer_unformat(packet->buffer,
- SILC_STR_UI_CHAR(&type),
- SILC_STR_END);
- if (ret == -1)
- return;
-
- /* We support only type number 1 (== SFTP) */
- if (type != 1)
- return;
-
- silc_buffer_pull(packet->buffer, 1);
-
- /* Give it to the file transfer protocol processor. */
- //silc_sftp_client_receive_process(xxx, sock, packet);
-}
projects / silc.git / blobdiff