deb-mbse/mbtask/taskcomm.c

/*****************************************************************************
 *
 * File ..................: mbtask/taskcomm.c
 * Purpose ...............: MBSE BBS Daemon
 * Last modification date : 05-Jul-2001
 *
 *****************************************************************************
 * Copyright (C) 1997-2001
 *   
 * Michiel Broek		FIDO:		2:280/2802
 * Beekmansbos 10
 * 1971 BV IJmuiden
 * the Netherlands
 *
 * This file is part of MBSE BBS.
 *
 * This BBS 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, or (at your option) any
 * later version.
 *
 * MB BBS 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 MB BBS; see the file COPYING.  If not, write to the Free
 * Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *****************************************************************************
 *
 * This program uses the BSD IPC stream sockets mechanism. This is the
 * server program. You need an entry in /etc/services for tcp service
 * "mbse" on port 60180. Yes, this is 1 higher as for ifcico. You don't 
 * need an entry in inetd.conf, because this program is written as a
 * daemon for fast access.
 *
 *****************************************************************************/

#include "libs.h"
#include "taskstat.h"
#include "taskregs.h"
#include "taskdisk.h"
#include "taskinfo.h"
#include "taskutil.h"
#include "taskcomm.h"


extern int			oserr;		/* Copy of Unix error	*/
extern int			sock;		/* Server socket	*/
extern struct sockaddr_un	from;		/* From socket address	*/
extern int			fromlen;	/* From address length	*/
extern int			logtrans;	/* Log transactions	*/


/************************************************************************
 *
 *  Logging procedures.
 */

int userlog(char *);
int userlog(char *param)
{
	char		*prname, *prpid, *grade, *msg;
	static char	lfn[64], token[14];

	lfn[0] = '\0';
	strcpy(token, strtok(param, ","));
	strcpy(token, strtok(NULL, ","));
	sprintf(lfn, "%s/log/%s", getenv("MBSE_ROOT"), token);
	prname = strtok(NULL, ",");
	prpid  = strtok(NULL, ",");
	grade  = strtok(NULL, ",");
	msg    = strtok(NULL, "\0");
	msg[strlen(msg) -1] = '\0';
	return ulog(lfn, grade, prname, prpid, msg);
}



/*
 * Process command received from the client.
 */
char *exe_cmd(char *);
char *exe_cmd(char *in)
{
	static char	obuf[SS_BUFSIZE];
	static char	ibuf[SS_BUFSIZE];
	static char	cmd[4];
	static char	token[SS_BUFSIZE];
	static char	ebuf[19];
	static char	*cnt, var1[16];
	int		result;

	strcpy(ibuf, in);
	strncpy(cmd, ibuf, 4);
	token[0] = '\0';
	strcpy(ebuf, "200:1,Syntax error;");

	/*
	 * Split the commandline after the colon so we can give the
	 * options directly to the actual functions. Also set a default
	 * and most used answer.
	 */
	strcpy(token, &ibuf[5]);
	strcpy(obuf, "100:0;");


	/*
	 * The A(counting) commands.
	 *
	 *  AINI:5,pid,tty,user,program,city;
	 *  100:0;
	 *  200:1,Syntax Error;
	 */
	if (strncmp(cmd, "AINI", 4) == 0) {
		if (reg_newcon(token) != -1)
			return obuf;
		else {
			stat_inc_serr();
			return ebuf;
		}
	}

        /*
         *  ACLO:1,pid;
         *  107:0;
         *  200:1,Syntax Error;
         */
	if (strncmp(cmd ,"ACLO", 4) == 0) {
		if (reg_closecon(token) == 0) {
			strcpy(obuf, "107:0;");
			return obuf;
		} else {
			stat_inc_serr();
			return ebuf;
		}
	}

	/*
	 *  ADOI:2,pid,doing;
         *  100:0;
         *  200:1,Syntax Error;
	 */
	if (strncmp(cmd, "ADOI", 4) == 0) {
		if (reg_doing(token) == 0)
			return obuf;
		else {
			stat_inc_serr();
			return ebuf;
		}
	}

	/*
	 *  ATTY:2,pid,tty;
         *  100:0;
         *  200:1,Syntax Error;
	 */
	if (strncmp(cmd, "ATTY", 4) == 0) {
		if (reg_tty(token) == 0)
			return obuf;
		else {
			stat_inc_serr();
			return ebuf;
		}
	}

	/*
	 *  ALOG:5,file,program,pid,grade,text;
         *  100:0;
         *  201:1,errno;
	 */
	if (strncmp(cmd, "ALOG", 4) == 0) {
		if (userlog(token) != 0) 
			sprintf(obuf, "201:1,%d;", oserr);
		return obuf;
	}

	/*
	 *  AUSR:3,pid,user,city;
	 *  100:0;
	 *  200:1,Syntax Error;
	 */
	if (strncmp(cmd, "AUSR", 4) == 0) {
		if (reg_user(token) == 0) 
			return obuf;
		else {
			stat_inc_serr();
			return ebuf;
		}
	}

	/*
	 *  ADIS:2,pid,flag; (set Do Not Disturb).
         *  100:0;
         *  200:1,Syntax Error;
	 */
	if (strncmp(cmd, "ADIS", 4) == 0) {
		if (reg_silent(token) == 0)
			return obuf;
		else {
			stat_inc_serr();
			return ebuf;
		}
	}

	/*
	 *  ATIM:2,pid,seconds;
         *  100:0;
         *  200:1,Syntax Error;
	 */
	if (strncmp(cmd, "ATIM", 4) == 0) {
		if (reg_timer(TRUE, token) == 0)
			return obuf;
		else {
			stat_inc_serr();
			return ebuf;
		}
	}

	/*
	 *  ADEF:1,pid;
         *  100:0;
	 */
	if (strncmp(cmd, "ADEF", 4) == 0) {
		if (reg_timer(FALSE, token) == 0)
			return obuf;
		else {
			stat_inc_serr();
			return ebuf;
		}
	}

	/*
	 * The chat commands
	 *
	 *  CIPM:1,pid;  (Is personal message present)
	 *  100:2,fromname,message;
	 *  100:0;
	 */
	if (strncmp(cmd, "CIPM", 4) == 0) {
		return reg_ipm(token);
	}

	/*
	 * CSPM:3,fromuser,touser,text; (Send personal message).
	 * 100:1,n;  n: 0=oke, 1=donotdisturb 2=buffer full 3=error
	 * 100:0;
	 */
	if (strncmp(cmd, "CSPM", 4) == 0) {
		if ((result = reg_spm(token))) {
			sprintf(obuf, "100:1,%d;", result);
			return obuf;
		} else
			return obuf;
	}

	/*
	 * The G(lobal) commands.
	 *
	 *  GNOP:1,pid;
	 *  100:0;
	 */
	if (strncmp(cmd ,"GNOP", 4) == 0) {
		reg_nop(token);
		return obuf;
	}

	/*
	 *  GPNG:n,data;
	 *  100:n,data;
	 */
	if (strncmp(cmd, "GPNG", 4) == 0) {
		sprintf(obuf, "100:%s", token);
		return obuf;
	}

	/*
	 *  GVER:0;
	 *  100:1,Version ...;
	 */
	if (strncmp(cmd, "GVER", 4) == 0) {
		sprintf(obuf, "100:1,Version %s;", VERSION);
		return obuf;
	}

	/*
	 *  GSTA:0;
	 *  100:19,start,laststart,daily,startups,clients,tot_clients,tot_peak,tot_syntax,tot_comerr,
	 *         today_clients,today_peak,today_syntax,today_comerr,!BBSopen,ZMH,internet,Processing,Load,sequence;
	 *  201:1,16;
	 */
	if (strncmp(cmd, "GSTA", 4) == 0) {
		return stat_status();
	}

	/*
	 *  GMON:1,n;  n=1 First time
	 *  100:7,pid,tty,user,program,city,isdoing,starttime;
	 *  100:0;
	 */
	if (strncmp(cmd, "GMON", 4) == 0) {
		cnt = strtok(token, ",");
		strcpy(var1, strtok(NULL, ";"));
		return get_reginfo(atoi(var1));
	}

	/*
	 *  GDST:0;
	 *  100:n,data1,..,data10;
	 */
	if (strncmp(cmd, "GDST", 4) == 0) {
		return get_diskstat();
	}

	/*
	 *  GSYS:0;
	 *  100:7,calls,pots_calls,isdn_calls,network_calls,local_calls,startdate,last_caller;
	 *  201:1,16;
	 */
	if (strncmp(cmd, "GSYS", 4) == 0) {
		return get_sysinfo();
	}

	/*
	 *  GLCC:0;
	 *  100:1,n;
	 */
	if (strncmp(cmd, "GLCC", 4) == 0) {
		return get_lastcallercount();
	}

	/*
	 *  GLCR:1,recno;
	 *  100:9,user,location,level,device,time,mins,calls,speed,actions;
	 *  201:1,16;
	 */
	if (strncmp(cmd, "GLCR", 4) == 0) {
                cnt = strtok(token, ",");
                strcpy(var1, strtok(NULL, ";"));
		return get_lastcallerrec(atoi(var1));
	}


	/*
	 * The (S)tatus commands.
	 *
	 *  SBBS:0;
	 *  100:2,n,status message;
	 */
	if (strncmp(cmd, "SBBS", 4) == 0) {
		switch(stat_bbs_stat()) {
			case 0:
				sprintf(obuf, "100:2,0,The system is open for use;");
				break;
			case 1:
				sprintf(obuf, "100:2,1,The system is closed right now!;");
				break;
			case 2:
				sprintf(obuf, "100:2,2,The system is closed for Zone Mail Hour!;");
				break;
		}
		return obuf;
	}

	/*
	 *  SOPE:0;
	 *  100:0;
	 */
	if (strncmp(cmd, "SOPE", 4) == 0) {
		stat_set_open(1);
		return obuf;
	}

	/*
	 *  SCLO:1,message;
	 *  100:0;
	 */
	if (strncmp(cmd, "SCLO", 4) == 0) {
		stat_set_open(0);
		return obuf;
	}

	/*
	 *  SFRE:0;
	 *  100:1,Running utilities: n  Active users: n;
	 *  100:0;
	 *  201:1,16;
	 */
	if (strncmp(cmd, "SFRE", 4) == 0) {
		return reg_fre();
	}

	/*
	 *  SSEQ:0;
	 *  100:1,number;
	 *  200:1,16;
	 */
	if (strncmp(cmd, "SSEQ", 4) == 0) {
		return getseq();
	}

	/*
	 *  SEST:1,semafore;   Get status of semafore
	 *  100:1,n;           1 = set, 0 = not set
	 *  200:1,16;
	 */
	if (strncmp(cmd, "SEST", 4) == 0) {
		return sem_status(token);
	}

	/*
	 *  SECR:1,semafore;   Set semafore
	 *  100:0;
	 *  200:1,16;
	 */
	if (strncmp(cmd, "SECR", 4) == 0) {
		return sem_create(token);
	}

	/*
	 *  SERM:1,semafore;   Remove semafore
	 *  100:0;
	 *  200:1,16;
	 */
	if (strncmp(cmd, "SERM", 4) == 0) {
		return sem_remove(token);
	}


	/*
	 * If we got this far, there must be an error.
	 */
	stat_inc_serr();
	return ebuf;
}



void do_cmd(char *cmd)
{
	char	buf[SS_BUFSIZE];
	int	slen, tries = 0;

	sprintf(buf, "%s", exe_cmd(cmd));
	if (logtrans) {
		tasklog('-', "< %s", cmd);
		tasklog('-', "> %s", buf);
	}

	for (;;) {
		slen = sendto(sock, buf, strlen(buf), 0, &from, fromlen);
		if (slen == -1)
			tasklog('?', "$do_cmd(): sendto error %d %s", tries, from.sun_path);
		else if (slen != strlen(buf))
			tasklog('?', "do_cmd(): send %d of %d bytes, try=%d", slen, strlen(buf), tries);
		else
			return;
		tries++;
		if (tries == 3)
			return;
		sleep(1);
	}
}