/* structs.h 

07/17
- add central global struct

06/16
- added CLIENT_RCFILE [moved to common.c on 07/17]
- added .bodyAux to msg record structure

06/14
- added SERVER_COMDEV and CLIENT_COMDEV [moved to common.c on 07/17]

06/11
- added busy to s_registered_client_record structure
- added compare_ok, compare_fail

05/27
- added pthread.h

05/11
- added file transfer flags to type t_msg

*/



#include <pthread.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <pthread.h>
#include <sys/file.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <signal.h>
#include <sys/socket.h>
#include <unistd.h>
#include <netdb.h>
#include <stdlib.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <sys/poll.h>
#include <time.h>
#include <ctype.h>
#include <unistd.h>
#include <fcntl.h>


/* moved to common.c :
#define CLIENT_RCFILE "/root/.monitas-client.rc"
#define CLIENT_COMDEV "/var/spool/monitas/client-input.dev"
#define SERVER_COMDEV "/var/spool/monitas/server-input.dev"
#define SERVER_STATUS_FILE "/var/spool/monitas/server-status.txt"
*/
#define MAX_STR_LEN 510
#define MAX_PENDING 8 /* silently limited to 5 by BSD, says a Linux manual */
#define MAX_CLIENTS 100
#define MSG_BODY_SIZE 200 /* 512 doesn't work; don't ask me why */
#define XFER_BUF_SIZE 16384 /* for sending archives between client and server */
                            /* NB: 32768 doesn't work; don't ask me why */

typedef enum { false=0, true=1} bool;
typedef enum { unused=0, login, logout, ping, pong, login_ok, logout_ok, 
                login_fail, logout_fail, backup_ok, backup_fail,
                restore_ok, restore_fail, compare_ok, compare_fail,
		trigger_backup, trigger_restore, trigger_compare,
                begin_stream, end_stream, user_req, progress_rpt } t_msg;
typedef enum { debug, info, warn, error, fatal } t_loglevel;


//#define log_it(x,y) { log_it_SUB(g_logfile,x,y); }
#ifndef __XSTR
#   define __XSTR(x) _XSTR(x)
#   define _XSTR(x) #x
#endif
#define log_it(lvl,msg,args...) { logToFile(g->logfile,lvl,__FILE__,__XSTR(__LINE__),__FUNCTION__,msg , ## args); }
extern void logToFile(char *logfile, t_loglevel level, char *filename, char *lineno, char *funcname, char *sz_message, ...);


/*
 * Global structure for all data that doesn't change at runtime.
 * The data may be modified at program start via command line options,
 * or -not implemented yet- via environment variables or server-client
 * communication.
 */
struct s_globaldata
{
    char *client_rcfile;        // path+name of client's rc file
    char *client_comdev;        // path+name of client's
    char *server_comdev;        // path+name of server's
    char *server_status_file;   // path+name of server's

    char *logfile;              // path+name of logfile
    t_loglevel loglevel;        // lowest level of msg written in the logfile
};
/*
 * there is one (1) global instance of above struct [defined in common.c] and
 * one global pointer [also in common.c] to address the struct inside all functions.
 * The pointer is declared here as external to permit the global access.
 */
extern struct s_globaldata *g;




struct s_client2server_msg_record /* msg from client to server */
{
  t_msg msg_type;
  long magic;
  int port; /* which port to contact client on */  
  char body[MSG_BODY_SIZE];
  char bodyAux[MSG_BODY_SIZE];
};



struct s_server2client_msg_record /* msg from client */
{
  t_msg msg_type;
  long magic; /* if pong/ack then it equals the magic# of the packet to which it's replying; else, 0 */
  int dummy;
  char body[MSG_BODY_SIZE];
  char bodyAux[MSG_BODY_SIZE];
};



struct s_registered_client_record
{
  char hostname_pretty[128]; /* specified by client in login packet */
  char ipaddr[20]; /* xxx.yyy.zzz.nnn of client */
  int port;
  bool busy; /* backing up / restoring / comparing */
  char last_progress_rpt[MAX_STR_LEN+1];
};



struct s_clientlist
{
  int items;
  struct s_registered_client_record el[MAX_CLIENTS];
};