Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>
#include <ctype.h>
#include <bio.h>
#include "authcmdlib.h"

/*
 * get the date in the format yyyymmdd
 */
Tm
getdate(char *d)
{
        Tm date;
        int i;

        date.year = date.mon = date.mday = 0;
        date.hour = date.min = date.sec = 0;
        for(i = 0; i < 8; i++)
                if(!isdigit(d[i]))
                        return date;
        date.year = (d[0]-'0')*1000 + (d[1]-'0')*100 + (d[2]-'0')*10 + d[3]-'0';
        date.year -= 1900;
        d += 4;
        date.mon = (d[0]-'0')*10 + d[1]-'0' - 1;
        d += 2;
        date.mday = (d[0]-'0')*10 + d[1]-'0';
        date.yday = 0;
        return date;
}

long
getexpiration(char *db, char *u)
{
        char buf[Maxpath];
        char prompt[128];
        char cdate[32];
        Tm date;
        ulong secs, now;
        int n, fd;

        /* read current expiration (if any) */
        snprint(buf, sizeof buf, "%s/%s/expire", db, u);
        fd = open(buf, OREAD);
        buf[0] = 0;
        if(fd >= 0){
                n = read(fd, buf, sizeof(buf)-1);
                if(n > 0)
                        buf[n-1] = 0;
                close(fd);
        }

        if(buf[0]){
                if(strncmp(buf, "never", 5)){
                        secs = atoi(buf);
                        memmove(&date, localtime(secs), sizeof(date));
                        snprint(buf, sizeof buf, "%4.4d%2.2d%2.2d",
                                date.year+1900, date.mon+1, date.mday);
                } else
                        buf[5] = 0;
        } else
                strcpy(buf, "never");
        snprint(prompt, sizeof prompt,
                "Expiration date (YYYYMMDD or never)[return = %s]: ", buf);

        now = time(0);
        for(;;){
                readln(prompt, cdate, sizeof cdate, 0);
                if(*cdate == 0)
                        return -1;
                if(strcmp(cdate, "never") == 0)
                        return 0;
                date = getdate(cdate);
                secs = tm2sec(&date);
                if(secs > now && secs < now + 2*365*24*60*60)
                        break;
                print("expiration time must fall between now and 2 years from now\n");
        }
        return secs;
}