Path: utzoo!mnetor!uunet!husc6!purdue!i.cc.purdue.edu!j.cc.purdue.edu!ain
From: ain@j.cc.purdue.edu (Patrick White)
Newsgroups: comp.sources.amiga
Subject: amicron (sources)
Message-ID: <6979@j.cc.purdue.edu>
Date: 28 Apr 88 16:13:46 GMT
Organization: PUCC Land, USA
Lines: 619
Keywords: part 1 of 1, uncompiled
Approved: ain@j.cc.purdue.edu	(Patrick White)

Submitted by:	kim@amdahl.uts.amdhal.com (Kim DeVaughn)
Summary:	unix cron for the Amiga -- run a command at a particular time.
Poster Boy:	Patrick White	(ain@j.cc.purdue.edu)
Archive Name:	sources/amiga/volume4/amicron24a.s.sh.Z
Tested.
 
NOTES:
   I re-did the arc to sepatate the binaries, sources & docs.
   There are some set-up files in the docs shar.
 
 
-- Pat White   (co-moderator comp.sources/binaries.amiga)
ARPA/UUCP: j.cc.purdue.edu!ain  BITNET: PATWHITE@PURCCVM  PHONE: (317) 743-8421
U.S.  Mail:  320 Brown St. apt. 406,    West Lafayette, IN 47906
 
========================================
 
#	This is a shell archive.
#	Remove everything above and including the cut line.
#	Then run the rest of the file through sh.
#----cut here-----cut here-----cut here-----cut here----#
#!/bin/sh
# shar:	Shell Archiver
#	Run the following text with /bin/sh to create:
#	Makefile.lat
#	Makefile.mnx
#	lmake
#	Amicron24.c
#	timer.c
# This archive created: Wed Apr 27 10:12:49 1988
# By:	Patrick White (PUCC Land, USA)
echo shar: extracting Makefile.lat '(299 characters)'
cat << \SHAR_EOF > Makefile.lat
OBJS=lib:c.o AmiCron24.o timer.o

LIBS=lib:lc.lib lib:amiga.lib

NAME=AmiCron

CC=lc

CFLAGS= -csuw -dLATTICE -r -b -v

$(NAME): $(OBJS)
	Blink from $(OBJS) lib $(LIBS) VERBOSE SC SD ND to $(NAME)


AmiCron24.o: AmiCron24.c 
	$(CC) $(CFLAGS) AmiCron24.c

timer.o: timer.c 
	$(CC) $(CFLAGS) timer.c

SHAR_EOF
if test 299 -ne "`wc -c Makefile.lat`"
then
echo shar: error transmitting Makefile.lat '(should have been 299 characters)'
fi
echo shar: extracting Makefile.mnx '(145 characters)'
cat << \SHAR_EOF > Makefile.mnx
AmiCron: Amicron.o timer.o
	ln -o AmiCron timer.o Amicron.o -lc32

Amicron.o: Amicron24.c
	cc +l Amicron24.c

timer.o: timer.c
	 cc +l timer.c	 
SHAR_EOF
if test 145 -ne "`wc -c Makefile.mnx`"
then
echo shar: error transmitting Makefile.mnx '(should have been 145 characters)'
fi
echo shar: extracting lmake '(142 characters)'
cat << \SHAR_EOF > lmake
lc -M -dLATTICE -csuw -r -b -v AmiCron24 timer
Blink from lib:c.o AmiCron24.o timer.o lib lib:lc.lib lib:amiga.lib VERBOSE SC SD ND to AmiCronSHAR_EOF
if test 142 -ne "`wc -c lmake`"
then
echo shar: error transmitting lmake '(should have been 142 characters)'
fi
echo shar: extracting Amicron24.c '(9440 characters)'
cat << \SHAR_EOF > Amicron24.c
/*
 *	amicron.c	(Version 2.4(a&L) by <CB>)
 *
 *	Public Domain (p) No Rights Reserved
 *
 *	This program operates as a daemon, waking up every minute
 *	to execute the CRONTAB table.  
 *
 *	Put in startup-sequence like:
 *		run newcli con:0/140/160/50/CronTask s:startcron
 *	The startcron file needs to contains just one line:
 *		amicron
 *
 *	Some notes are included below concerning the cron table
 *	file format.  In this version the cron table file is left
 *	on disk and not moved to core, and  the command character
 *	to signify a newline '%' is not used.
 *
 *	Some cron table entry examples:
 *
 *	Print the date in the crontask window every minute:
 *		* * * * * date
 *
 *	Print the date in the crontask window on the hour, every hour:
 *		0 * * * * date
 *
 *	Run uupc at 4:30 am every day except Sat and Sun:
 *		30 4 * * 1-5 uupc -siscuva
 *
 *	Backup the files every other day at 7:30 pm:
 *		30 19 * * 1,3,5 sdbackup -s LAST dh0: incbkup_1:
 *
 */

/* 
 * Public Domain (p) by S. R. Sampson
 * Version 2.3, October 1987
 * Amiga port by Rick Schaeffer October 1987
 *
 * Rick Schaeffer          UUCP:  seismo!uunet!iscuva!ricks!ricks
 * E. 13611 26th Ave.      Phone: (509)928-3533
 * Spokane, WA  99216
 *
 * Modified path for CronTab & CronErr to suit Amiga enviroment better
 * Version 2.31  <CB> 15.12.87 
 *
 * Fixed bug with CronTab entries specifying an event by date (month)
 * i.e. "* * 24 12 * say Merry christmas", now works!
 * Version 2.32 <CB> 25.12.87
 *
 * Removed "CronErr", an obvious Unix "feature"
 * Version 2.33 <CB> 31.12.87 
 *
 * Additional support for Lattice 4.0, changed to complete sleep (no more  
 * 5 I/O ints. per second), added command line parameter for CronTab path.
 * Added feature to align Cron to start on 01 seconds, including "loss"
 * due to lengthy command calls or extensive I/O.
 * Version 2.4 <CB> 10.01.88 
 *
                          
                          
______  /          
______\O                    - The Software Brewery - 
      \\              		    
       o            Sparkling, fresh software from W.-Germany
                 
     @@@@@	      Straight from the bar to your Amiga
     |~~~|\        
     | | |/        
     |___|        With our regards to the Software Distillery

Members are (listed alphabetically):
Christian Balzer alias <CB>, Lattice C, user interfaces, beer addict. 
Christof Bonnkirch, Aztec C, telecommunications, money adict.
Heiko Rath alias <HR>, Assembler, ROM-Kernal stuff, Marabou addict. 
Peter Stark alias PS, Lattice C, IO & utilities, WordStar addict.
Ralf Woitinas alias RAF, Assembler, anything, Ray-Tracing addict.
Torsten Wronski alias MM, Assembler, anything, girls addict.

Beverages: Altenmuenster Brauer Bier, Urfraenkisches Landbier, Grohe Bock.

Send exotic drinks, comments, critizism, flames to:

The Software Brewery
Christian Balzer
Im Wingertsberg 45
D-6108 Weiterstadt
West-Germany

Our BBS "AmigaNode" isn't online yet. As soon as it becomes available, 
you'll be the first to know :-).

 *
 * Compilation notes:
 * Just use the supplied "makefile.manx" for Aztec C 3.4(b) or later. 
 * Lattice C 4.0 users just execute "lmake" or use "makefile.lattice".
 * The whole compilation and link procedure (including timer.c) from RAM
 * took me 50 seconds with Lattice 4.0 and 67 seconds with Aztec 3.4b.
 * Please note that you need to link timer.o for the TimeDelay() function
 * if you don't use make or execute lmake.
 *
 * Well, the Lattice folks claim that LATTICE get's defined by their 
 * compiler, but it didn't work for me. So, if you don't use make or lmake, 
 * or define LATTICE, you'll get blasted by (my) Lattice if ya don't remove 
 * all the lines marked with "LK" below...
 *						<CB>
 */

#include <stdio.h>
#include <time.h>

#ifndef LATTICE			/*LK*/
#include <functions.h>		/*LK*/
#endif				/*LK*/

#ifdef LATTICE			/*LK*/
#include <string.h>
#include <proto/dos.h>
#endif				/*LK -the last one*/

#define TRUE 1
#define FALSE 0

#define CRONTAB "S:CronTab"	/* Our default path */

#define MAXLINE	132
#define SIZE	64

#define TITLE "\x9B1;33mAmiCron v2.4\x9B0m by \x9B1m<CB>\x9B0m & - \x9B3mThe Software Brewery\x9B0m -\n"
#define WHERE "Im Wingertsberg 45, D-6108 Weiterstadt, \x9B1mW-Germany\x9B0m\n"
 
int	eof;
short	sleepy;
char	min[SIZE], hour[SIZE], day[SIZE],
	month[SIZE], wday[SIZE], command[SIZE];
char	*tokv[] = { min, hour, day, month, wday };
char	crontabs[200];  /* You might define quite a path! <CB> */
FILE	*fd;
 
 
/*
 *	This is the basics, ready for bells and whistles
 *
 */


void main(argc, argv)
int argc;
char *argv[];
{
	void showhelp();
	void wakeup();

	/* Below we use the same functions & variables as in wakeup()
	   just to get the current second  <CB>*/

	register struct tm *tm;
	struct tm *localtime();
	long cur_time;
 	
	/* Tell the guy out there what he might do with this deamon
	 * and who made it. <CB>*/

	printf(TITLE);
	printf(WHERE);
	printf("Usage: %s [Path & Filename]\n",argv[0]);
	printf("       or '%s ?' for help\n",argv[0]);

	/* Now let's see if the user told us to look someplace else
	 * for our input file or if he want's some more usage hints <CB> */
  
	if (argc == 2) {
		if (argv[1][0] == '?') { 
			showhelp();
			exit(10);
		}
		else (void)strcpy(crontabs, argv[1]);
		
	}
	else (void)strcpy(crontabs, CRONTAB);	
	/* If there isn't a user path, we'll use the default <CB>*/

	/*Now tell the user with what path & filename we wound up*/
	printf("CronTab path = %s \n",crontabs);

	for (;;)  {

		wakeup();

		time(&cur_time);		/* get the current time */
		tm = localtime(&cur_time);	/* break it down */

		/* Now we calculate the amount of seconds
		 * 'till the next minute <CB>*/

		sleepy = (60-tm->tm_sec);	
		/* PLEASE don't decrease the 60 above, believe me,
		 * I know what I'm doing there! <CB> */ 

		TimeDelay(sleepy,0,0);	
		/* sleep 'till next minute */
	}
}

void wakeup()
{
	register struct tm *tm;
	struct tm *localtime();
	long cur_time;
	
	char doit[80];
 	
	time(&cur_time);		/* get the current time */
	tm = localtime(&cur_time);	/* break it down */
 
	/* Now let's see if there is a CronTab file out there <CB> */ 	

	if ((fd = fopen(crontabs, "r")) == NULL) {
	fprintf(stderr, "Can't open %s\nTry again\n", crontabs);
	exit(1);
	}


	eof = FALSE;
 
	while (!eof)  {
		if (getline() && match(min,tm->tm_min) &&
		   match(hour,tm->tm_hour) && match(day,tm->tm_mday) &&
		   match(month,tm->tm_mon+1) && match(wday,tm->tm_wday))  {
		/* Weird localtime months ^ range from 0-11 !!! <CB>*/
			(void)strcpy(doit,"RUN >nil: ");
			(void)strcat(doit,command);
			(void)Execute(doit,NULL,NULL);
			}
		}
	fclose(fd);
}
 
 
/*
 *	A line consists of six fields.  The first five are:
 *
 *		minute:         0-59
 *		hour:           0-23
 *		day:            1-31
 *		month:          1-12
 *		weekday:        0-6 (Sunday = 0)
 *
 *	The fields are seperated by spaces or tabs, with the
 *	first field left justified (no leading spaces or tabs).
 *	See below for optional field syntax.
 *
 *	The last field is the command field.  This command will
 *	be executed by the CLI just as if typed from a console.
 */
 
int getline()
{
	register char *p;
	register int   i;
	char    buffer[MAXLINE], *scanner(), *fgets();
 
	if (fgets(buffer, sizeof buffer, fd) == NULL)  {
		eof = TRUE;
		return(FALSE);
		}
 
	for (p = buffer, i = 0; i < 5; i++)  {
		if ((p = scanner(tokv[i], p)) == (char *)NULL)
			return(FALSE);
		}
 
	(void)strcpy(command, p);     /* scoop the command */
	return(TRUE);
}
 
 
char *scanner(token, offset)
register char   *token;		/* target buffer to receive scanned token */
register char   *offset;	/* place holder into source buffer */
{
	while ((*offset != ' ') && (*offset != '\t') && *offset)
		*token++ = *offset++;
 
	/*
	 *      Check for possible error condition
	 */
         
	if (!*offset)
		return ((char *)NULL);
 
	*token = '\0';
        
	while ((*offset == ' ') || (*offset == '\t'))
		offset++;
 
	return (offset);
}
 
 
/*
 *	This routine will match the left string with the right number.
 *
 *	The string can contain the following syntax:
 *
 *	*		This will return TRUE for any number
 *	x,y [,z, ...]	This will return TRUE for any number given.
 *	x-y		This will return TRUE for any number within
 *			the range of x thru y.
 */
 
int match(left, right)
register char   *left;
register int    right;
{
	register int	n;
	register char	c;
 
	n = 0;

	if (!strcmp(left, "*"))
		return(TRUE);
 
	while ((c = *left++) && (c >= '0') && (c <= '9'))
		n  =  (n * 10) + c - '0';
 
	switch (c)  {
		case '\0':
			return (right == n);
 
		case ',':
			if (right == n)
				return(TRUE);
			do {
				n = 0;
				while ((c = *left++) && (c >= '0') && (c <= '9'))
					n = (n * 10) + c - '0';
 				if (right == n)
					return(TRUE);
				} while (c == ',');
			return(FALSE);
 
		case '-':
			if (right < n)
				return(FALSE);
 
			n = 0;
			while ((c = *left++) && (c >= '0') && (c <= '9'))
				n = (n * 10) + c - '0';
 
			return(right <= n);
		}
}

void showhelp()		/* by <CB> */

{ 
	printf("\nWell, you really should read the .doc file,\n");
	printf("but here are some more hints:\n");
	printf("You might specify only ONE command line parameter,\n");
	printf("the path were Amicron should look for it's command table,\n");
	printf("including the filename of the command table.\n");
	printf("If you don't supply a path, Amicron will use it's default\n");
	printf("path (S:CronTab).\n");
}
SHAR_EOF
if test 9440 -ne "`wc -c Amicron24.c`"
then
echo shar: error transmitting Amicron24.c '(should have been 9440 characters)'
fi
echo shar: extracting timer.c '(4111 characters)'
cat << \SHAR_EOF > timer.c
/* SIMPLE TIMER EXAMPLE PROGRAM: 
 *
 * Includes dynamic allocation of data structures needed to communicate
 * with the timer device as well as the actual device IO
 *
 * Author:  Rob Peck, 12/1/85 */

/* Stripped to TimeDelay & supporting functions for Cron inclusion <CB> */

#include "exec/types.h"
#include "exec/nodes.h"
#include "exec/lists.h"
#include "exec/memory.h"
#include "exec/interrupts.h"
#include "exec/ports.h"
#include "exec/libraries.h"
#include "exec/io.h"
#include "exec/tasks.h"
#include "exec/execbase.h"
#include "exec/devices.h"
#include "devices/timer.h"

long TimerBase;		/* to get at the time comparison functions */


/* *********************************************************************** */
/*	Timer function - timedelay(seconds,microseconds)

	Your task is put to sleep for the specified time interval.

	If seconds > 0, then UNIT_VBLANK is used, delay is in multiples of
	60ths of a second.  If seconds < 0, then UNIT_MICROHZ is used for 
	more precision.    

	Returns value of 0 if no errors, nonzero (and no task sleeping)

	Notice that since this is a multi-tasking system, the delays
	shown here must be considered to be only approximate.

	Also note that this function is used primarily to show how
	a timer device is accessed, including the creation of the 
	message port and a message structure (IOStdReq).   Note that
	there is a Delay(interval) function already in the DOS.library.
	(See the DOS developer's manual for details).
	
	But this Delay() function leaves LOT to be desired, <CB>.
*/
/* *********************************************************************** */

extern struct MsgPort *CreatePort();
extern struct IORequest *CreateExtIO();

struct timerequest 
*PrepareTimer(precision)
SHORT precision;
{
	/* return a pointer to a time request.  If any problem, return NULL */

	int error;
	SHORT whichunit;

	struct MsgPort *timerport;
	struct timerequest *timermsg;
	
        timerport = CreatePort(0,0);
        if (timerport == NULL) 
		return(NULL);	/* Error during CreatePort */

	timermsg = (struct timerequest *)CreateExtIO(
					timerport,sizeof(struct timerequest));
	if (timermsg == NULL)
		{
		DeletePort(timerport);
		return(NULL);	/* Error during CreateExtIO */
		}
	
	if(precision)	/* if true, use precision timer  ( under 1 second ) */
		whichunit = UNIT_MICROHZ;
	else
		whichunit = UNIT_VBLANK;

	error = OpenDevice(TIMERNAME, whichunit, timermsg, 0);
	if (error != 0)
		{
		DeleteExtIO(timermsg,sizeof(struct timerequest));
		DeletePort(timerport);
		return(NULL);	/* Error during OpenDevice */
		}
	return(timermsg);
}

int
GetTimerBase()
{
	int tbase;
	struct timerequest *tr;
	tr = PrepareTimer();
	tbase = (int)tr->tr_node.io_Device;		
	DeleteTimer(tr);
	return(tbase);
}

int 
TimeDelay(seconds,microseconds,precision)
		/* more precise timer than AmigaDOS Delay() */
ULONG seconds,microseconds;
int precision;
{
	int precise;
	struct timerequest *tr;
	if(seconds < 0 || precision != 0)
				/* do delay in terms of microseconds */ 
		precise = TRUE; /* yes, use the precision timer.     */
	else 
		precise = FALSE; /* no, not necessary */

	tr = PrepareTimer(precise);
					/* get a pointer to an initialized
					 * timer request block */
	if(tr == NULL) return(-1);	/* any nonzero return says timedelay
					 * routine didn't work. */
	WaitForTimer(tr,seconds,microseconds);

	DeleteTimer(tr);	/* deallocate temporary structures */
	return(0);
}			/* end of timedelay */


int
WaitForTimer(tr,seconds,microseconds)
ULONG seconds,microseconds;
struct timerequest *tr;
{
	tr->tr_node.io_Command = TR_ADDREQUEST;   /* add a new timer request */
        tr->tr_time.tv_secs =  seconds;        	/* seconds */
        tr->tr_time.tv_micro = microseconds; 	/* microseconds */
        DoIO( tr );             		/* post request to the timer */
						/* goes to sleep till done */
	return(0);
}

int
DeleteTimer(tr)
struct timerequest *tr;
{
	struct MsgPort *tp;

	tp = tr->tr_node.io_Message.mn_ReplyPort;
	if(tr != 0)
	{
		CloseDevice(tr);
		DeleteExtIO(tr,sizeof(struct timerequest));
	}
	if(tp != 0)
		DeletePort(tp);
	return(0);		
}
SHAR_EOF
if test 4111 -ne "`wc -c timer.c`"
then
echo shar: error transmitting timer.c '(should have been 4111 characters)'
fi
#	End of shell archive
exit 0