tor_version_as_new_as(const char *platform, const char *cutoff)
{
  tor_version_t cutoff_version, router_version;
  char *s, *s2, *start;
  char tmp[128];

  tor_assert(platform);

  if (tor_version_parse(cutoff, &cutoff_version)<0) {
    log_warn(LD_BUG,"cutoff version '%s' unparseable.",cutoff);
    return 0;
  }
  if (strcmpstart(platform,"Tor ")) /* nonstandard Tor; be safe and say yes */
    return 1;

  start = (char *)eat_whitespace(platform+3);
  if (!*start) return 0;
  s = (char *)find_whitespace(start); /* also finds '\0', which is fine */
  s2 = (char*)eat_whitespace(s);
  if (!strcmpstart(s2, "(r") || !strcmpstart(s2, "(git-"))
    s = (char*)find_whitespace(s2);

  if ((size_t)(s-start+1) >= sizeof(tmp)) /* too big, no */
    return 0;
  strlcpy(tmp, start, s-start+1);

  if (tor_version_parse(tmp, &router_version)<0) {
    log_info(LD_DIR,"Router version '%s' unparseable.",tmp);
    return 1; /* be safe and say yes */
  }

  /* Here's why we don't need to do any special handling for svn revisions:
   * - If neither has an svn revision, we're fine.
   * - If the router doesn't have an svn revision, we can't assume that it
   *   is "at least" any svn revision, so we need to return 0.
   * - If the target version doesn't have an svn revision, any svn revision
   *   (or none at all) is good enough, so return 1.
   * - If both target and router have an svn revision, we compare them.
   */

  return tor_version_compare(&router_version, &cutoff_version) >= 0;
}
Unknown