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/* taken from XFCE's Xarchiver, made to work without glib for mutt */
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <time.h>
#include <string.h>
/* mkdtemp function for systems which don't have one */
char *mkdtemp (char *tmpl)
{
static const char LETTERS[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
static unsigned long value = 0;
unsigned long v;
int len;
int i, j;
len = strlen (tmpl);
if (len < 6 || strcmp (&tmpl[len - 6], "XXXXXX") != 0)
{
errno = EINVAL;
return NULL;
}
value += ((unsigned long) time (NULL)) ^ getpid ();
for (i = 0; i < 7 ; ++i, value += 7777)
{
/* fill in the random bits */
for (j = 0, v = value; j < 6; ++j)
{
tmpl[(len - 6) + j] = LETTERS[v % 62];
v /= 62;
}
/* try to create the directory */
if (mkdir (tmpl, 0700) == 0)
return tmpl;
else if (errno != EEXIST)
return NULL;
}
errno = EEXIST;
return NULL;
}
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