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/*
** Copyright 2001-2003 Double Precision, Inc. See COPYING for
** distribution information.
*/
#include "config.h"
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <time.h>
#if TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#if HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#include "tempname.h"
static const char base64[] =
"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-,";
int libmail_tempfile(char *filename_buf)
{
unsigned long seed;
int i;
int fd;
#if HAVE_GETTIMEOFDAY
struct timeval tv;
gettimeofday(&tv, NULL);
seed=tv.tv_sec;
seed ^= tv.tv_usec << 16;
#else
time_t t;
time(&t);
seed=t;
#endif
seed ^= getpid();
for (i=0; i<1000; i++, seed += 5000)
{
char *p;
unsigned long n;
strcpy(filename_buf, "/tmp/mimegpg.");
p=filename_buf + strlen(filename_buf);
n=seed;
*p++=base64[ n % 64 ]; n /= 64;
*p++=base64[ n % 64 ]; n /= 64;
*p++=base64[ n % 64 ]; n /= 64;
*p++=base64[ n % 64 ]; n /= 64;
*p++=base64[ n % 64 ]; n /= 64;
*p++=base64[ n % 64 ];
*p=0;
if ((fd=open(filename_buf, O_RDWR | O_CREAT | O_EXCL, 0600))
>= 0)
return (fd);
if (errno != EEXIST)
break;
}
return (-1);
}
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