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- #include <u.h>
- #include <libc.h>
- #include <ctype.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, fd;
- int n;
- /* 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));
- sprint(buf, "%4.4d%2.2d%2.2d", date.year+1900, date.mon+1, date.mday);
- } else
- buf[5] = 0;
- } else
- strcpy(buf, "never");
- sprint(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;
- }
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