pass 1023 for n */
int vslprintf(char *str, int n, const char *format, va_list ap)
{
-#ifdef HAVE_VSNPRINTF
int ret = vsnprintf(str, n, format, ap);
if (ret > n || ret < 0) {
str[n] = 0;
}
str[ret] = 0;
return ret;
-#else
- static char *buf;
- static int len=MAXPATHLEN*8;
- int ret;
-
- /* this code is NOT a proper vsnprintf() implementation. It
- relies on the fact that all calls to slprintf() in rsync
- pass strings which have already been checked to be less
- than MAXPATHLEN in length and never more than 2 strings are
- concatenated. This means the above buffer is absolutely
- ample and can never be overflowed.
-
- In the future we would like to replace this with a proper
- vsnprintf() implementation but right now we need a solution
- that is secure and portable. This is it. */
-
- if (!buf) {
- buf = malloc(len);
- if (!buf) {
- /* can't call debug or we would recurse */
- exit_cleanup(1);
- }
- }
-
- vsprintf(buf, format, ap);
- ret = strlen(buf);
- if (ret > n) {
- /* yikes! */
- exit_cleanup(1);
- }
- buf[ret] = 0;
-
- memcpy(str, buf, ret+1);
-
- return ret;
-#endif
}