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/* SPDX-License-Identifier: GPL-2.0 */
/** \file client.h Common client functions and exported symbols from client_common.c. */
/** 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,
/** Command is executing. */
CL_EXECUTING,
/** Server is expecting data (addblob commands only). */
CL_SENDING,
};
/** Data specific to a client task. */
struct client_task {
/** The state of the connection. */
int status;
/** 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 parsed command line (including the command). */
struct lls_parse_result *lpr;
/** The RSA private key. */
char *key_file;
/** Paraslash user name. */
char *user;
/** The client task structure. */
struct task *task;
/** List of features supported by the server. */
char **features;
};
#define CLIENT_CMD_PTR (lls_cmd(0, client_suite))
#define CLIENT_OPT_RESULT(_name, _lpr) \
(lls_opt_result(LSG_CLIENT_PARA_CLIENT_OPT_ ## _name, _lpr))
#define CLIENT_OPT_GIVEN(_name, _lpr) \
(lls_opt_given(CLIENT_OPT_RESULT(_name, _lpr)))
#define CLIENT_OPT_UINT32_VAL(_name, _lpr) \
(lls_uint32_val(0, CLIENT_OPT_RESULT(_name, _lpr)))
#define CLIENT_OPT_STRING_VAL(_name, _lpr) \
(lls_string_val(0, CLIENT_OPT_RESULT(_name, _lpr)))
void client_close(struct client_task *ct);
int client_parse_config(int argc, char *argv[], struct client_task **ct_ptr);
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,
struct btr_node *parent, struct btr_node *child,
struct sched *sched);
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