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/* taspoolid() -- build a spoolid into provided buffer
*
* Minimum spoolid space is about 17 chars! Have at least 32 !
* (8 for a timestamp, 8+1 for the i-node number and terminating null..)
*/
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
/* These ARE NOT MIME BASE64 characters, but something by which it is
fairly easily to MANUALLY decode the following result.. */
char taspid_encodechars[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ0123abcdefghijklmnopqrstuvwxyz4567890-=";
void taspoolid(buf,mtime,inodenum)
char *buf;
time_t mtime;
long inodenum;
{
char *s = buf;
struct tm *tt;
/* GMT time */
tt = gmtime(&mtime);
tt->tm_year += 1900;
/* Start with a capital 'S' .. */
*s++ = 'S';
sprintf(s,"%ld", inodenum);
s += strlen(s);
/* Year in 'base64', sort of.. */
*s++ = taspid_encodechars[(tt->tm_year >> 12) & 63];
*s++ = taspid_encodechars[(tt->tm_year >> 6) & 63];
*s++ = taspid_encodechars[(tt->tm_year ) & 63];
/* Month */
*s++ = taspid_encodechars[tt->tm_mon];
/* Day */
*s++ = taspid_encodechars[tt->tm_mday-1];
/* Hour */
*s++ = taspid_encodechars[tt->tm_hour];
/* Minutes */
*s++ = taspid_encodechars[tt->tm_min];
/* Seconds */
*s++ = taspid_encodechars[tt->tm_sec];
*s = 0; /* terminate zero */
/* .. and finally attach the inode-number part of the spool file name. */
}
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