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Ham Radio 2000
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jnos
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jnos_src
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oldbids.c
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C/C++ Source or Header
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1994-04-17
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4KB
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126 lines
/* This program will deleted old BID's from the history file,
* after making a backup copy.
* If no arguments are given, anything older then 30 days will
* be deleted.
* By default, the history file is '/spool/history'
* on the current drive.
* Optional parameters:
* -dpath, where 'path' is the path to the history file
* (path can have an optional ending '/')
* #, where # is the age of bids to expire
*
* Eg. 'oldbids 30 -d/nos/spool/' will delete all bids older then
* 30 days from the file '/nos/spool/history'
*
* Copyright 1992, Johan. K. Reinalda, WG7J/PA3DIS
* email : johan@ece.orst.edu
* packet: wg7j@wg7j.or.usa.na
*
* Any part of this source may be freely distributed for none-commercial,
* amateur radio use only, as long as credit is given to the author.
*
* v1.0 920325
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
static char Copyright[] = "(C) '92 Johan. K. Reinalda, WG7J";
#define LEN 80
#define HISTFILE "history"
#define BACKUP ".bak"
#define NULLCHAR (char *) 0
char hfile[LEN] = "/spool/";
int days = 30;
int expired = 0;
void
main(argc,argv)
int argc;
char *argv[];
{
register int i;
char *cp;
FILE *old, *new;
time_t now;
time_t age;
time_t bidtime;
char oldfile[LEN];
char buf[LEN];
/* first get options, if any */
if(argc > 1) {
for(i=1;i<argc;i++) {
if(!strncmp(argv[i],"-d",2) && strlen(argv[i]) < LEN+1) {
strcpy(hfile,&argv[i][2]);
cp = &hfile[strlen(hfile)-1];
if(*cp != '/')
strcat(hfile,"/");
} else {
if((days = atoi(argv[i])) == 0){
printf("Invalid option: %s\n",argv[i]);
return;
}
}
}
}
strcat(hfile,HISTFILE);
strcpy(oldfile,hfile);
strcat(oldfile,BACKUP);
/* delete a previous backup and rename current history file */
unlink(oldfile);
if(rename(hfile,oldfile) == -1) {
puts("Can't rename history file");
return;
}
/* open backup for reading, create new history file */
if((old = fopen(oldfile,"rt")) == NULL) {
puts("Error opening history.bak");
return;
}
if((new = fopen(hfile,"wt")) == NULL) {
puts("Error creating history file");
return;
}
now = time(&now);
age = (time_t)(days*86400L);
while(fgets(buf,LEN,old) != NULL) {
if((cp=strchr(buf,'\n')) != NULLCHAR)
*cp = '\0';
if((cp=strchr(buf,' ')) != NULLCHAR) {
/*found one with timestamp*/
*cp = '\0';
cp++; /* now points to timestamp */
if((bidtime = atol(cp)) == 0L)
/*something wrong, re-stamp */
fprintf(new,"%s %ld\n",buf,now);
else {
/* Has this one expired yet ? */
if(now - bidtime < age)
fprintf(new,"%s %ld\n",buf,bidtime);
else
expired++;
}
} else {
/* This is an old one without time stamp,
* add to the new file with current time as timestamp
*/
fprintf(new,"%s %ld\n",buf,now);
}
}
fclose(old);
fclose(new);
printf("%d bid's expired\n",expired);
return;
}