/*
- * Copyright (C) 1997-2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 1997-2014 Andre Noll <maan@systemlinux.org>
*
- * 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.
- *
- * 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
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ * Licensed under the GPL v2. For licencing details see COPYING.
*/
-/** \file client.h common client functions and exported symbols from client_common.c */
+/** \file client.h Common client functions and exported symbols from client_common.c. */
-#include <openssl/rc4.h>
+/** The different states of a connection from the view of the client. */
enum {
+ /** TCP connection is established. */
CL_CONNECTED,
+ /** Server sends the welcome message. */
CL_RECEIVED_WELCOME,
+ /** Client sends the authentication request. */
CL_SENT_AUTH,
+ /** Server sends encrypted challenge. */
CL_RECEIVED_CHALLENGE,
+ /** Client solves the challenge and sends the result. */
CL_SENT_CH_RESPONSE,
+ /** Server accepts this authentication. */
CL_RECEIVED_PROCEED,
- CL_SENT_COMMAND,
- CL_SENDING_STDIN,
- CL_RECEIVING_SERVER_OUTPUT
+ /** Command is executing. */
+ CL_EXECUTING,
+ /** Server is expecting data (addblob commands only). */
+ CL_SENDING,
};
-#define CLIENT_BUFSIZE 8192
-
-struct private_client_data {
+/** Data specific to a client task. */
+struct client_task {
+ /** The state of the connection. */
int status;
- int fd;
+ /** The file descriptor and the session keys. */
+ struct stream_cipher_context scc;
+ /** The sideband contexts for receiving/sending. */
+ struct sb_context *sbc[2];
+ /** The buffer tree nodes for receiving/sending. */
+ struct btr_node *btrn[2];
+ /** The hash value of the decrypted challenge. */
+ unsigned char *challenge_hash;
+ /** The configuration (including the command). */
struct client_args_info conf;
+ /** The config file for client options. */
char *config_file;
+ /** The RSA private key. */
char *key_file;
+ /** Paraslash user name. */
char *user;
- RC4_KEY rc4_recv_key;
- RC4_KEY rc4_send_key;
+ /** The client task structure. */
struct task task;
- int eof;
- char buf[CLIENT_BUFSIZE];
- size_t loaded;
- int check_r;
- int check_w;
- long unsigned challenge_nr;
- /* only used if stdin gets sent to para_server */
- char *inbuf;
- size_t *in_loaded;
- int *in_eof;
+ /** List of features supported by the server. */
+ char **features;
};
-int client_open(struct private_client_data *pcd);
-void client_close(struct private_client_data *pcd);
-int client_parse_config(int argc, char *argv[],
- struct private_client_data **pcd_ptr);
-void client_pre_select(struct sched *s, struct task *t);
-void client_post_select(struct sched *s, struct task *t);
+void client_close(struct client_task *ct);
+int client_parse_config(int argc, char *argv[], struct client_task **ct_ptr,
+ int *loglevel);
+int client_connect(struct client_task *ct, struct sched *s,
+ struct btr_node *parent, struct btr_node *child);
+int client_open(int argc, char *argv[], struct client_task **ct_ptr,
+ int *loglevel, struct btr_node *parent, struct btr_node *child,
+ struct sched *sched);