/* Server-related stuff for sysmon */

#ifndef SERVER_H
#define SERVER_H

#include <sys/time.h>

#ifndef ETREE_H
# include "etree.h"
#endif

/*************************************************************************/

/* Information about a server. */

#define MAX_DISKS	8	/* Number of filesystems to remember */

typedef struct {
    struct timeval last_update;
    char name[256];
    int bsize, blocks, bused, bresv, inodes, iused, iresv;
} DiskInfo;

typedef struct server_struct Server;

struct server_struct {
    Server *next, *prev;
    char *name;			/* Hostname of the server */
    int port;			/* Port to connect to */
    char *password;		/* Password for the connection */
    char *alias;		/* Alias for the server */
    int sock;			/* Socket descriptor (-1 if not connected) */
    int valid;			/* Connection is valid (i.e. auth succeeded) */

    /* Information on current read */
    int response_len;		/* -1 if no current read */
    char *response_buf;

    /* Uptime data */
    struct timeval last_uptime_update;
    int uptime, nusers, load1, load5, load15, nprocs;

    /* Memory data */
    struct timeval last_memory_update;
    int memtotal, memfree, shared, buffers, cached, swaptotal, swapfree;

    /* Filesystem data (for most recently queried MAX_DISKS filesystems) */
    DiskInfo disks[MAX_DISKS];
};

/*************************************************************************/

/* Create a new server record. */
extern Server *server_new(void);

/* Return a pointer to the Server structure corresponding to the given name
 * or alias, or NULL if no such server exists. */
extern Server *server_find(const char *name);

/* Attempt to connect to the server. */
extern void server_conn(Server *s);

/* Retrieve information about the given server.  Tries to connect to the
 * server if not already connected.  Returns 0 if the information could not
 * be retrieved, else 1.  The information is stored in the server record. */
extern int server_query(Server *s, int query, int nargs, ETree **args);

/*************************************************************************/

#endif	/* SERVER_H */